Chapter 4…

November 7th, 1955 - Baines's Residence:

It was evening and Marty was standing in front of Baines, waiting for someone to answer it after he knocked on the door. Since he left Lou's Cafe after dealing with Biff and his friends, he went to Doc's home where he found the older man watching the video about his future self, then he showed Marty his plans to send him back into the future. That is when Lorraine knocked on the door, where she told him she wanted a man who was strong and who could protect those who they loved, so she wanted him to ask her to the Enchantment Under the Sea Dance. Being put on the spot like that, and so did so.

After which, he went to see his future father to let him know what was going on. George wasn't happy to hear this and asked how he was going to get Lorraine to date him now if Marty was going with her. Marty explained that Lorraine had caught him off guard and did what she wanted. But the plan for him (George) to ask Lorraine out was still on. Marty just needed a few days to convince Lorraine to go with George. George wasn't happy but wanting to get the young man out of his life, he went with Marty's plan.

After this, Marty went to see Lorraine, to get her to go with George to the dance and hopefully marry and have him in the future. Now at Lorraine's home, he knocked on the door and was waiting for Lorraine to answer it. He was shocked to find that it wasn't Lorraine who answered the door, but his Grandmother Stella. He could recognise her right away thanks to the photos he saw of them in the future. The photos didn't do her any justice. Although near her forties, she was still good looking and sexy. He could understand where his mother got her looks from.

"Calvin Klein, nice to meet you again, up and walking." said his grandmother.

"You are?" asked Marty, pretending not to know who the woman was.

"Oh, you wouldn't know who I am. I'm Stella Baines, Lorrain's mother." Stella introduced herself to her future grandson.

"Hi Mrs. Baines, I would like to thank you for allowing your daughter to look after me whilst I was knocked out." Marty thanked his grandmother.

"No problem, it was the least we could do seeing how my husband knocked you down in the first place." Stella waved off the thanks, "I just wished we were here when you came to, but Lorrain's grandpa had an accident and we had to go to him to look after him."

"No problem. My parents told me that family comes first." Marty told her with a smile, "Anyway, Lorraine took good care of me whilst you were away."

"Knowing my daughter, I bet she did." Stella said with what seemed to be a knowing smile, like she knew that her daughter and him and sex with each other. But for whatever reason, she wasn't going to say anything.

"Sorry if I seem to be rude, Mrs. Baines, but is Lorraine here?" Marty asked politely. "I would like to talk to her."

"I'm sorry but no, her father just took her to her friends," explained his grandmother, "me and my husband only returned here to get a few things for our other children and ourselves, before we return to my father for another week or two. We would have taken Lorraine with us, but she told us about the dance and wanting to stay in town for school. So her father took her to her friends so that someone could look out for her."

"Oh, I see. In that case, I leave Mrs. Baines." Marty said with a sigh, not happy about this turn of events.

"Wait one moment, please come in," said Stella, "I'll give you her friend's address so you can visit her."

"Thank you, Mrs. Baines." Marty thanked his grandmother as he walked into the house.

"Please call me Stella. Mrs. Baines makes me sound like a grandmother." Stella told her future grandson, "I'm only thirty-eight. Do I look like a grandmother to you?"

She struck a pose like a model with a hand behind her neck and another on her hip. Stella was wearing a light blue dress that stretched tightly across her ample tits. She smiled at him with her pretty brown eyes. Stella might have been his grandmother, but she looked more like a pin-up girl at the moment.

"Um, well, no Mrs. B… uh Stella," Marty fumbled. "You look, uh, really nice."

"Thank you, Calvin, I wish my husband thought so. He doesn't seem to take notice anymore." Stella said with a sigh, as she took his arm and escorted him into the living room. "Lorraine tells me you are taking her to the 'Enchantment Under the Sea' dance. I am so happy to see her dating again after that college boy broke her heart. I never really liked him. He was too old for her."

It shocked Marty to hear that his mother dated someone from college. Sure, he learned that his mother wasn't as pure as she made herself out to be. Despite that, he thought she was only dating those of her age.

"Yeah, um, about the dance, I'm un…" began Marty, trying to explain that he couldn't take her but had someone else in mind.

"Exactly what I wanted to talk to you about Calvin," she said before he could finish, as she was looking for something but couldn't find it. "Would you mind coming back to my bedroom? I can't find my address book. I think I left it in my room. Not only that, but there are things about Lorraine you need to know."

Stella guided Marty out of the living room and upstairs and into her bedroom. She then asked him to sit on the side of the bed as she went to the bedside table, where she picked up the address book and looked through it. After a few moments, she picked up a price of paper and wrote the address down. Afterwards, she stood directly in front of him.

"As I told you, she dated a college boy, but what I didn't tell you is that it didn't end on good terms." explained Stella with a sad sigh, "I've only heard bits here and there, but I'm afraid that her heart might not have been the only thing that the college boy broke." his grandmother told him, as to Marty's shock, she reached behind her back and unzipped her dress. "It's hard for a mother when she learns that her daughter is no longer pure. A few young people today don't want to wait for marriage anymore, do they, Calvin?"

She pulled her arms from the sleeves and let her dress fall to the floor. Marty sat there in shock. He did not know how to respond. Lorraine told him that her mother had told her repeatedly that she should act like a proper lady, but here she was getting undressed in front of a young boy. A boy who could be old enough to be her son.

"Um… Uh…" muttered Marty, unable to come up with anything to say.

"I'm embarrassing you, aren't I?" Grandma Stella asked with a smirk, while reaching under her slip and pulling down her panties. "You seem like a nice boy, Calvin, but these days, even nice boys and nice girls are having sex. I'm a little jealous, actually. When I was your age, we had to be very careful about that kind of thing."

"Uh look… Mrs. Baines… Stella," Marty replied nervously, getting up from the bed. "Maybe I should…"

"Did you know I was listening in on the phone call you had with my husband?" she interrupted and pushed him back down, "Whilst my husband might not have recognized the sound, I knew what you and my daughter were doing. You were fucking my daughter as you talking to my husband, won't you, Marty?"

She unfastened her bra and pulled it out from under her slip.

"Uh… I…" he stammered.

"Of course, you were." the grandmother said knowingly, "Now whilst I want to teach my daughter to be a proper young lady, I'm beginning to realize that, that isn't going to be the case. Which in that case, as a mother, I only want what's best for my daughter. If she's going to have sex with boys, and apparently, she is, then I want to make sure that the boy she is with knows how to satisfy her properly."

Stella pulled her slip over her head and threw it on the floor. She stood in front of Marty, completely naked. His eyes feasted on two huge tits that hung like melons from her chest. Dark brown inch-plus caps with eraser sized tips poked out at him. A triangle of dark curly hair tapered down between her legs.

"You're young Calvin," she said, stepping closer. "What you need is an experienced partner to teach you how to properly satisfy a woman."

She dropped to her knees in front of him. Marty knew this was so wrong. She was more than twice his age. She was his grandmother. But he couldn't push her away. That seeing how he already fucked his own mother, he also wanted to fuck his sexy grandmother too. To see who was better. He sat there as Stella unfastened his jeans and pulled them down to his knees. His hard cock bounced free.

"Just remember Calvin," she said just before plunging her lips down his length, "That I only want what is best for my daughter."

Stella took him deep into her mouth, swirling her tongue around his hard flesh. Marty moaned in pleasure as she found every nerve ending in his cock. She clamped her lips tightly around his shaft and moved them up and down his length in rapid fucking motions. Then she spit on his cock and took him deep into her throat. Several times she brought him to the brink of orgasm before squeezing his load back into his balls. Marty found she was way better than her daughter at this.

"That's a very nice cock, Calvin," Grandma Stella told him, as she lifted her drooling lips from his knob. "I approve. Now I want to see how well you eat pussy."

She pushed him back onto the bed and straddled his head. Part of Marty didn't like that his grandmother was controlling him, as he found that he loved being the one in control. But now, wanting to fuck his grandmother and knowing this was the fastest way for it to happen. He let it be for now.

So, doing as Stella wanted, Marty looked up at the pink folds peeking out from her gash in a forest of dark curly hair. She sank down into his mouth. Marty clamped his lips over her swollen mound and pushed his tongue into her steamy passage. She squirmed against him.

"That's good Calvin. Move your tongue inside me. Oooohhhhh… Now do my clit… mmmmm…"

Stella slid her slimy folds down across his chin and then back up and over his nose. Marty's tongue probed and licked her juicy cunt and hard clit. She smeared her sticky secretions across his face. It shocked Marty when she slid her asshole over his mouth.

"Lick me there Calvin. Girls like that."

Marty was too excited to think about what he was doing. His tongue shot out and bathed her tight knot in saliva. She squirmed against it and dropped a hand between her legs. Two fingers plunged into her pussy. Marty could hear wet squishing sounds as she pumped them in and out. She slid a finger to her clit. Moments later her body stiffened.

"Oh, fuck… UUUUNNNGGGHHHH… AAAAGGGHHHH…"

Stella slid her pussy back over Marty's mouth. Cunt juice sprayed into it like a burst of pee. Stella continued to rub her clit. Another orgasm gripped her pussy. More juices filled his mouth and dribbled down the sides of his face. She squirmed against his thrusting tongue flooding his mouth with more of her pungent juices.

"That was good Calvin," Grandma Stella told him as she rolled onto her back. "Lorraine is going to love it when you eat her pussy like that. Now I want you to take off your clothes. We're going to fuck."

Here Stella helped the teen to remove his shoes, jeans and t-shirt. She then pushed him onto his back and climbed on top, straddling him with her knees facing away. Marty was able to see her dripping wet pussy hanging between her thighs, just below the creamy spheres of her ass cheeks. She grabbed his cock as she guided it to her opening. He watched it slowly disappear as she impaled herself onto his length.

Stella rode him hard and fast. Marty watched her ass cheeks rise and fall onto him. He thrust up into her pussy each time she came crashing down against him. The searing heat of her cunt gripped him tightly. She reached back and slid a hand down the crevice between her cheeks. Her middle finger found the dark knot of her sphincter. Marty looked on in amazement as she buried it deep into her asshole.

"Oh, fuck… oh fuck… oh fuck… oooohhhhhh… oh god… UUUGGGHHHHHHH…"

She pulled off his cock and screamed. Her juices gushed out like a sprinkler across his thighs. She plunged back down onto his length and fucked herself to another orgasm. Stella spun around on top of him with his cock still buried in her pussy. Her tits dangled in his face as she rode him with wild abandon. Marty caught one of her tits with his mouth and bit down on one of her nipples. She threw her head back and screamed, then lifted off his cock and sprayed cunt juice all over his stomach. She finally rolled onto her back.

"Get up here and fuck me like a man. I want it hard." Stella told her future grandson.

"It would seem the saying is true, like mother, like daughter, both of you seem to be sluts in disguise." Marty told his grandmother as he put his fingers into her pussy as he finger fucked her.

"I'm, I'm, we're not a, a, slut, we're not sluts…" Stella moaned in pleasure as Marty finger fucked her.

"Oh you're not?" asked with a smirk as he picked the speed of the finger fuck, "Then tell me, what do you call a married woman who lures someone they just meet into their room and fucks them, someone you know your daughter is interested in? Tell me, what teenage woman would suck a boy's cock that they only meet and begs for them to fuck her, to use her? To me, they are sluts."

Stella wanted to say it wasn't true, but that's what her own mother told her what a woman who did such things was, and what she told her own daughter. And here she was doing those very same things. Before she could push Calvin from her, to prevent her from doing so, Calvin pulled his fingers out of her and pulled her into a kiss. One that she welcomed, as Calvin began to squeeze her breast, and pulled at her nipple.

"Tell me that you a slut, my slut, and I'll fuck you as you wanted me to." Marty told her as he pulled back from the kiss and pinched her nipple. He knew it was wrong, however, after treating his mother like this, he found he enjoyed it too much and wanted to see if he could get away with this with his grandmother too, to see how far he could go.

"But I'm not a…" began Stella, but Marty slapped her right breast.

"But you are tough, so say it, you're a slut, my slut." Marty told her again.

"But…" Stella tried again, but Marty stopped her again by slapping her other breast. This happened a few times, and each time Marty slapped her breast, more Stella got turned on by this. As she realized that the person she knew as Calvin knew how to handle his partner. "Yes, you're, you're right, I, I am a slut, your slut." Stella submitted to the young man in front of her.

"Good girl." Marty told her as he kissed her and ran his hand through her hair and pulled her into the kiss more, to show that she was his. He couldn't believe that he was getting off by this, taking control of his female family members. In fact, it wasn't until her fucked Lorraine that she began to like this, it was like she awoke something inside him that enjoyed this, to take control of them and make them submit to him. "You're just like your daughter, a slut."

"Yes, she is a slut your slut, just like me." admitted Stella lustfully, wanting nothing more but Marty to fuck her, willing to say anything to make it to happen.

"I bet your youngest daughter, Sally, might one day become the same, a slut, just like her mother and sister. Maybe she would be mine if I'm still around." Marty said darkly, as the dark idea came to him. He fingered fuck her once again. "Wouldn't it be nice if one day I come back and fuck the three of you?"

"Y, yes, I, I like that." a dark part of Stella agreeing to this, as the lust for sex took over her mind, as images of her and her daughters fucking this man at the same time.

"Now, get on your hands and knees." ordered Marty, which Stella was all too happy to do so.

With Stella on her hands and knees, he drove his cock deep into her pussy, before he started to slam into her again and again.

"Fuck me Calvin… harder… I want to feel it… shove your fucking cock up my cunt…" Stella cried out, unable to believe how much control that this young man had over her already. She thought she wouldn't give in to someone like this. But then again, she never thought she would go after someone as young as this Calvin and have him fuck her. But there was something about this young man that made her want this, to fuck him, for him to use her. She was enjoying this feeling and wanted more.

Stella found that Calvin was relentless as the bed was thumping against the wall each time he slammed into her from behind her. Juices poured from her pussy in a steady stream. One orgasm after the next sent her spinning into another world. Marty's balls were screaming. He couldn't hold back.

"AAAAARRRRRGGGGGGGHHHHHHH…"

Stella could feel Calvin's hot cum sprayed from his cock and filled her pussy with spurt after spurt of creamy seed. He was still squirting into her cunt when she stiffened and screamed so loud the walls seemed to shake. Their combined juices leaked out from around his thrusting cock and soaked into the bedspread. He remained deep inside and felt her pussy clench his cock with several post-climatic spasms.

Marty pulled his cock from her pussy and turned her over, where he sat on top of her and wedged his cock between her breasts. His grandmother was happy to wrap them tightly around his cock and slowly massaged him with her tits to keep him hard. Then she took his cock into her mouth. His cock slid down her throat. She snaked out her tongue and licked his balls.

Marty was enjoying all this.

Siding her lips up his shaft and swirling her tongue around his knob, she said, "I want you to cum in my mouth, Calvin. Can you do that for me?"

Before Marty could answer, his grandmother's tongue flew across the sensitive underside of his crown. This was when Marty took his future grandmother's head and rammed his cock into her and fucked her mouth until his cum surged up his length and exploded into her mouth in a series of spurts. When he was finished, his grandmother gulped it down.

"That was great." admitted Stella once Marty pulled out his cock.

"Yeah, it was. I just wished we had more time so I could show you more." Marty said as he got off the bed and got dressed, "But I need to leave before your husband comes back."

"I wish you didn't have to leave, but I understand." said Stella as she got up and got dressed, somewhat amazed that her husband hadn't returned yet. He must have been talking to the Johnsons about whatever. If that wasn't the case, she would love to have more time with Calvin. Even so, she had to say to Calvin this, "I can see why my daughter seems really into you. You know how to keep the ladies happy in the bed. I don't have to worry about her being unhappy with you."

"Yeah, that's the problem," admitted Marty, "I might break her heart without meaning too. I have to return to my coast guard training, and I don't know when or if I'll be able to return to her. I want her to be happy, but I don't think it'll be me."

Training as a coast guard was an honourable job, as they saved many lives. But at the same time, it was a dangerous job, seeing they risk their lives to save people and with accidents happening in the sea, so there was a risk of Calvin dying. That would break her daughter's heart even more. Stella wasn't sure what to say to this, so she said, "Listen Calvin, I know that I can't change your mind, however, I would like to ask you to be careful out there. It will break my daughter's heart if she learns you died. Knowing that you are alive will give her hope that you might one day return to her, even if you don't."

"Don't worry, I'll keep myself safe. I have no plans of dying." Marty told his grandmother to be honestly, "but at the same time, I don't know when I'll be returning. So, I would like it if you could look after Lorraine when I leave. Make sure she is happy."

"Of course, I will." Stella said as she kissed the young man on the lips, "I love my family and would protect them as best as I can."

"That's all I can hope for." Marty said with a smile. He then suddenly realized he might have changed the future again. Not only by fucking his grandmother, but by having her to look after his future more than she already did. Marty remembers how his grandmother would visit their family a few times a year. But now, he feels as if that could be more often, even interacting in his mother's life more. So, he had to wonder what short of change this would make in the future.

"Now, if you don't mind, I would like Lorraine's friend's address," said Marty, "I don't want to be here when your husband gets back."

"I understand." said Stella as she handed a price of paper with Johnson's address on it. Once Marty got it, he gave one last kiss and said before he left with a smirk, "Maybe, before I leave, I could have a threesome with you and your daughter."

Before Stella could say anything, Marty had already left. She knew she should be disgusted at the thought, but for some reason, the idea turned her on. Even having her youngest daughter, Sally when she was old enough, fucking Calvin, was turning her on. She didn't know why this was happening to her, but it was. It was like after fucking Calvin, some sort of sexual beast awoke in her and the only one who could tame it was Calvin himself. It was strange. But if Calvin was going to be leaving soon, these feelings should go with him. If not, she didn't know what would happen to her.

Although she was hoping to have one last time with Calvin before he leaves for good. She would have to think of something so that she could return home without her husband.

To Be Continued!

Author's Note:Here ends another chapter of Back to the Future - A What if Story, I hope you enjoyed it and if you did, could you take a few moments to leave some feedback, to let me know what you think? I would like to apologise for the late update, but I had problems with writing this chapter. Until the last week or so, I couldn't come up with a good way to write this. So I hope this chapter was worth the wait.