Chapter 6: Punishment

"Where were you all day? I was worried."

Lisa was upset. It was already past midnight when Bart finally came to her room.

"Sorry, Lis. I was hanging out with Milhouse," the boy said. Naturally, he couldn't come out and admit that he had spent the last thirty minutes giving his sleeping mom a suppository and then going balls-deep in her anus.

"Milhouse? I know you two are friends, but do you know what time it is? I was trying to text you, but you didn't answer. I told mom that you hadn't come home, but she just said that you'd probably turn out soon. She wasn't acting like herself. Normally she'd be worried sick, but she just went to bed early and passed out. I think she's coming down with a fever."

"I'm sure she'll be fine. She's probably just exhausted from all the housework. Plus she knows me. This isn't the first time I've been out late."

"I guess so, but… hey! What's that smell?" Lisa was sniffing the air, looking for the source of the scent. Her eyes landed on her brother's crotch. She looked at him suspiciously. "I thought you said you were with Milhouse. Why do I smell another woman?"

Bart gulped nervously. Indeed, his dick was coated with the delicious aroma of their mother's asshole. But how did Lisa recognize the smell?

"That scent is so familiar…" Lisa continued, racking her brain. "But I can't put my finger on it."

"It's just your imagination," Bart said, thinking hard on his toes. "Milhouse's, uhh… stepmom has this really strong perfume. It's very popular with the ladies. I think that's what you're smelling."

"Mr. Van Houten already found a new wife? I wonder how Milhouse feels about it."

"He's fine, don't worry about it."

Bart was making up stories as he went. He knew that if Lisa ever asked Milhouse about it, the whole lie would be revealed. But it was better to be caught in a lie than to admit that he had fucked Marge right after Lisa had told him not to pursue her. Her jealousy could be really scary.

"Well anyway, I'm glad you're okay," Lisa said, changing the subject finally. Her brother let out a sigh of relief. "But next time you better answer my texts. Otherwise no more lewd favors from me."

"I won't ghost you anymore," Bart said quickly. "Tomorrow's Saturday, so we'll have the whole weekend to hang out. Just the two of us."

"Promise?"

"Promise."

The two siblings proceeded to kissed passionately before saying goodnight.

The buzzing of a lawnmower woke up Bart. The sunlight was beaming through his window and birds were singing. Looking at his Krusty the Clown alarm clock, he saw that the time was already past eleven. It was the weekend, so he wasn't in a hurry to go anywhere. But he did want to go see if his mother had changed in any noticeable way since getting the aphrodisiac.

The boy didn't bother to get out of his pajamas and went straight downstairs and into the kitchen. The breakfast bacon and hash browns were already on the table, but the blue-haired woman was not there. The sound of a vacuum cleaner was coming from the living room, so Bart headed there after grabbing a strip of bacon for the road.

"Good morning, honey," Marge said in her usual tone while she pushed the vacuum cleaner back and forth.

"You look good this morning, mom" Bart said, testing the waters. "Whatever your morning routine is, it's working. You're glowing!"

"Aww, thank you, dear," Marge said. "You know, your father has really changed. It's been a while since he last gave me some attention. But last night he was like a total hunk of a beast! I was so tired that I could barely move, but he got me caught up in his… energy. It was so romantic and... exciting!"

"You don't say…"

Of course, it had been Bart who had given the mature woman an anal creampie last night. But she had no way of knowing that.

"Oh, what am I saying?" Marge caught herself. "I shouldn't be talking about this stuff with you."

"Talk about what?" Bart played dumb. He wanted to see if he could make his mother talk explicitly about sex in front of him.

"Hmph, you'll figure it out when you're older."

Marge carried on cleaning. But Bart wasn't done with her. He chewed on the piece of bacon while watching her every move. There had to be something he could do to verify if the Pheromone Pills were working. Even if their effects were gradual, he was expecting to see some kind of change in Marge's behavior.

"Bart, don't you have anything better to do than following me around?" Marge asked while looking over her shoulder.

"Nah," the boy replied, openly staring at his mother's ass. "I enjoy looking at you."

Marge groaned and looked at her backside as if she thought there was something stuck to it.

"Bart, the only reason for you to pester me like that is that you want something. So just tell me what it is. A new video game? A trip to Blockoland?"

"Mom, you missed a spot under the TV." Bart ignored his mother's questions. The blue-haired woman didn't seem pleased about him changing the subject, but proceeded to push the tips of the vacuum under the TV stand where her son had pointed. Bart leaned back on the sofa and took in the view of his mother bending over in front of him. He was pitching a tent in his pajamas, but he wasn't bothering to hide it.

"Bart, I can see you staring at my butt," the woman said with an annoyed sigh. "Didn't we talk about this yesterday? You're not supposed to touch or comment on women's bodies."

"But I'm not touching or commenting, am I?" Bart wisecracked. "I'm simply observing in quiet admiration."

"Did Milhouse put you up to this again?"

"Maybe. Maybe not."

"Well… if you're just looking, I guess it's fine," Marge relented. "Just don't get in my way."

Success! She's letting me look!

Marge had Bart get off the sofa. She then pulled the sofa forward to vacuum behind it. Bart moved closer and squatted behind her to get a nicer angle.

"Bart, you're too close. You're distracting me!" Marge said angrily. Bart didn't answer, so she just grumbled and kept cleaning. Despite her verbal protestations she wasn't exactly trying to hide her ass. Every time she pushed the vacuum, she leaned forward, which pushed her hips back and made her protruding butt stick out even more than usual.

The spiky-haired boy enjoyed watching his mom clean for what felt like at least ten minutes. If he didn't know better, he'd say that she was deliberately working slower than usual just to tease him for a longer time. Maybe she secretly enjoyed the attention. But unfortunately, the boy's viewing experience was interrupted when someone yanked his ear.

"Owowowowow!" Bart cried while being dragged by the ear. With his head tilted he could only make out the zigzaggy orange dress of his little sister. She took him all the way up the stairs and into her room where she shut the door behind them.

"What is it, Lis?" he asked when the girl finally let him go.

"You were looking at mom again."

"I was just helping her clean."

"Liar."

The girl grabbed her brother's hand and led him to her bed. She pushed him down on his back forcefully.

"What are you doing, Lisa?"

"This is your punishment," she said emotionlessly as she climbed on top of the bed next to him. Lisa then turned around on her knees to face away from Bart. She lifted her left leg over his torso to straddle him and pulled up her orange dress. Bart gulped as his little sister's ass slowly drew closer and closer to his face. She then slammed her butt down on him, making him take her full weight.

Bart's entire vision was now filled with two enormous yellow mountains. He had experienced this same bliss on the school bus yesterday. He was back home. This was where he belonged. He took a long whiff of Lisa's intoxicating scent as the little girl started rocking back and forth, diving his face even deeper into her canyon. After about thirty seconds, Lisa finally lifted her hips. She was looking over her shoulder smugly while the boy was catching his breath.

"You better enjoy that air while you can," the girl said. "Because you're going back in."

With that, she lowered her bottom again and took a seat on her rightful throne. She started gently bouncing up and down on her brother's face like it was a trampoline. Bart landed kisses on every part of her hindquarters. He got so into it that even when Lisa gave him an opportunity to breathe, he grabbed her hips and, pulled her ass back, and buried his face deep in her crack.

"Umm, Bart," Lisa said nervously. Her little dominatrix power play was cracking. "I think that's enough. I don't actually want to suffocate you.. Aahh!"

She squealed as she felt Bart's tongue licking her pucker through her panties.

"No, Bart. That's too embarrassing."

She gently climbed off and helped Bart sit up. The boy's face was red with asphyxia and wet with Lisa's pussy juices.

"I'm sorry. I went too far," the girl apologized.

"No, that was amazing. If that's what your punishments are like, I can't wait to get a reward from you!"

Lisa giggled. She pulled Bart to sit on the side of the bed and got off the bed herself. "I can't leave you hanging, though." She pointed at the boy's raging erection.

"You ready to have sex?" Bart asked, pulling out his dick.

"No, Bart. That would be incest. We can't do anything involving penetration."

"So that's where you draw the line, huh…"

"But I can do this."

Lisa motioned for Bart to stay sitting on the edge of the bed while she turned around and stuck out her butt.

Is she doing what I think she's doing?

Bart pushed his hips forward, causing his throbbing penis to land squarely between his sister's firm ass cheeks like a space shuttle docking into a space station. Lisa was looking over her shoulder with bedroom eyes as she started moving her hips up and down.

She is! My slutty sister is actually giving me a buttjob!

"Aah! Where did you learn to do this, Lisa?" Bart moaned. He didn't have to do anything but sit there. His eager sister was doing all the work.

"I read about it on the internet," the little bookworm confessed. "I was looking up sexual acts that didn't involve penetration and this seemed to be something you'd like. Given how obsessed you are with mom's ass."

"Lisa, you naughty girl…"

"I don't have a big chest, so I can't give you a boobjob yet. But maybe in the future…"

"No," Bart said. "Don't ever change Lisa. You're perfect just the way you are right now. I love your tiny tits. I love your tight preteen ass. I love your elementary school pussy and tender dicksucking lips. I want you to always look like this."

"You know I can't do that," Lisa laughed. She then gave an absolutely filthy look. "I guess you're gonna have to enjoy this immature body of mine to the full extent while you still have the chance."

Lisa picked up the pace. Bart couldn't believe how big her ass was for an eight-year old girl. Even his larger than average penis was completely swallowed by her cheeks to the point where he could only see the head of his dick peeking out from the top of her crack while he hotdogged her.

"Ahh! Lisa, I'm cumming. Where do you want it?"

"Cum on my ass, big bro," the devilish little harlot replied while clenching her yellow buttcheeks to squeeze Bart's penis even harder.

"Anything for my cumdumpster! I'm gonna paint your plump ass white with my cum. Take this!"

He took aim and fired. The first cumblast overshot, landing on the girl's curved lower back, staining her rolled-up dress. The rest of his sperm hit the mark, landing two large wads, one on each of her butt cheeks. The gently flowing rivers of thick white liquid flowed down and connected along the way into larger streams while they were pulled downward across her beautiful ass by the force of gravity.

The two siblings were panting in the afterglow.

"Wow, you really made a mess. There's even more than last time."

"Sorry. Should I go get some tissues?"

"And deny me my breakfast juice? No way."

Lisa scooped up a handful of her brother's dick milk and slurped it down thirstily.

"You seriously skipped mom's breakfast in favor of this?" Bart asked in disbelief.

"Maybe…" Lisa said playfully while licking the sticky strands that were forming between her fingers like liquid spider webs.

"That's a good girl!"

Suddenly there were three loud knocks on the door. Marge's muffled voice came from the other side.

"Lisa! I'm doing laundry. Give me your dirty clothes."

The girl quickly wiped the rest of Bart's semen from her butt with her dress and licked her hand clean.

"Just a second, mom! I was just getting changed." She turned to face her brother. "Quick! Hide in my closet."

Bart pulled up his shorts and did as he was told. Lisa pulled took off her cumstained dress and threw it on top of the full laundry bin. She then took a similar orange dress from the closet and put it on before shutting the closet door. Bart could see through the cracks as his sister carried the laundry to the door and opened it.

"Here you go mom!" she said.

"Thanks, sweetie. Have you seen your brother? I just saw him, but he wasn't in his room and I didn't hear him say he was going out."

"Haven't seen the little menace all day," Lisa lied with a straight face.

"I see. Well, I'm also going to need your bedsheets, so… Lisa! What's that stuff on the floor?"

The girl had been attempting to block her mother's field of view, but due to their height difference it didn't work very well. Marge had spotted the large pool of sperm right in front of the bed.

"Oh, I just spilled some almond milk that was on my nightstand. Don't worry, I'll clean it up right away."

"Lisa, you know better than to bring food into your room," Marge reprimanded. "That stuff can leave a permanent stain on the floor. It's probably better if I take care of it."

"No, mom. It's my breakfast… my breakfast milk, I mean. I'm the one who spilled it, so I should clean it up."

"Okay then. But make sure you do it well. That floor better be spotless when I come back. And no more drinks in your room, young lady."

"Yes, mom. Oh, and I changed my own bedsheets the other day, so no need to change them for me."

"I see. Good for you, Lisa. I guess you do have what it takes to become a dependable housewife one day."

Having said that, Marge picked up Lisa's laundry basket and left. Bart waited until he heard her footsteps going down the stairs before he came out of his hiding place.

"Phew, that was close," he said to his sister who had already closed the door and gone back to finishing her meal on the floor. He had just ejaculated, but the sight of his sister on all fours drinking his lovejuices never stopped being incredibly arousing. "Good job thinking on your feet, Lis. But I just hope mom doesn't see the stains on the dress that you put in the laundry. She might recognize the smell. If she figures out what we've been doing we might get in trouble."

Lisa smacked and wiped her lips. She stood back up. "What, you think she might know that it's your… umm, stuff on my skirt?"

"Well, yeah… I mean, she's the one who always cleans my bedsheets, so she definitely knows what it smells like."

"Well… as long as she doesn't have any definite proof, I don't think she'll bring it up. She seemed to buy the thing about the almond milk. Mom still thinks we're just a couple of innocent children. I doubt she would suspect anything."

"Yeah, I guess."

"Trust me, it'll be fine," Lisa said and pecked her brother on the lips reassuringly. Bart pulled her closer and fondled her perfect ass.

"Who's my little whore?"

"I am," she said, giggling flirtatiously before kissing him again.