"What the hell are you two doing?" Sheldon flinched when he heard this voice, knowing exactly who it was. Missy looked around Sheldon when he stopped fucking her. "Georgie!" she yelled, seeing her older brother standing in the doorway. Sheldon looked at her, confused why she was happy about them getting caught. Sheldon was frozen in fear, but Missy was so excited that she pulled Sheldon's penis out of her and crawled across the bed and sat on the edge, her legs spread apart enough to be showing her crotch to Georgie.
"What's up?" she said with a smile. Georgie became distracted for a moment by Missy's naked body, but managed to refocus, "I heard you two yelling and decided to see what you were doing, but that might've been a mistake." Sheldon finally calmed down and turned to meet his brother. "What are you going to do?" he said in a quivering voice. Georgie looked at Sheldon, trying not to focus on his penis, "I should tell Mom and Dad." Missy's smile faded a bit, saying, "Why?" Georgie looked at her sternly, "Because you two were having sex!" Sheldon looked down in shame and panic, and said, "I knew we shouldn't have done this now. We're going to be in so much trouble." Missy and Georgie both looked at him and yelled, "Shut Up!" Sheldon immediately put his hands into his lap; a little embarrassed, while still trying to cover himself.
Georgie took a deep breath and said, "I said I SHOULD tell them. But I won't. Frankly, if they knew what you two were doing, it would make things really awkward around here, and I would have to hear about it." Missy perked back up, smiling ear to ear. To show her appreciation, she jumped off the bed and gave Georgie a big hug, wrapping her naked body around his leg, dripping some lubricant left from her and Sheldon's interrupted session onto the floor. Once she released Georgie, she looked up at him, and said, "You know, Mom and Dad aren't going to be back for a few hours. Would you like to join us?"
Georgie and Sheldon both looked at her like she was crazy, but Georgie was the first to speak up, "Are you crazy? I'm not going to have sex with a nine- year- old, much less one that's my sister." Missy looked at him with sad, begging eyes, "Please? It would be a great sibling bonding experience." Georgie, done with her, started walking towards the door. Missy figured that looking pitiful and being nice wasn't going to have the same effect on Georgie as it does on her parents, especially not with what she wanted from him.
"Fine.", she said, "You'll just have to live with knowing that your siblings have more sexual knowledge and experience than you do, virgin." Georgie stopped in his tracks and turned to look at her. She had her arms crossed, looking as smug as ever. "How do you even know how to do that?" said Georgie. Missy responded simply, "I read." Georgie closed the door and knelt down to meet Missy face-to-face, saying, "I'll do it, but just so you can't blackmail me." Missy hugged him around his neck and said, "Thank you." Georgie hugged her back by instinct, touching her naked butt for a moment before retracting. "Um, right." he said, "Let's get this over with."
Georgie stood up as Missy took his hand, leading him over to the bed. She jumped back up next to Sheldon, both sitting cross legged. "What are you waiting for? Strip." Missy ordered. "All right, hold your horses." responded Georgie, as he began to pull off his blue and white baseball t-shirt. Once it was off, he tossed it on the floor, and Missy gazed at his fit body, getting a little turned on. "Next, the pants." Missy said in a slightly shaken voice. Georgie did as she said, but when his pants were half down, he noticed Missy's face was bright red. "Missy, are you okay?" he asked. Her eyes shifted between Georgie's face and the bulge in his pants while saying, "Yeah, just... continue." Georgie finished pulling his pants off and threw them into the pile with his shirt.
Finally, the part Missy had been waiting for. She crawled to the edge of the bed so that she was face to face with the bulge in Georgie's boxers. Entranced, she grabbed the waistband and pulled them down. Just as the underwear passed Georgie's waist, his penis sprung free, pointing directly at Missy's nose.
"Awesome.", she said, gazing at its size. Missy grabbed it with her right hand, rubbing up and down its shaft. She looked up at Georgie's face, and noticed that he was blushing, too. To really get him excited, she put the head of his penis in her mouth and licked all over it. "Damn, that feels good." said Georgie. Missy pulled her mouth away and said, "The real thing feels even better." She crawled to the middle of the bed and got on her hands and knees. She then stuck her butt in the air and spread her lips with her hands, exposing her hole to Georgie. "Wow.", he said, "Your vagina's so small." Missy looked over at him as well as she could, and, in confusion, said, "Vagina? What's that?" Georgie climbed onto the bed behind Missy while saying, "It's the hole in your crotch." He put his finger to it, making Missy shiver. "You two have been having sex and you didn't even know what this is called?"
Sheldon finally crawled over to them, as Missy attempted to defend them, "I guess we were too busy actually doing it to learn the names; just like we should be right now." Georgie pulled his hand away, spit in it, and rubbed it along his penis, making it hard and wet. "Okay, you asked for it.", he warned. He lined up with Missy's sopping wet vagina, and slowly inserted the head. "Mmm, you're so tight." said Georgie, attempting to slide in further. "And you're so big!" Missy responded, enduring the feeling of Georgie stretching her, "This is totally different from when Sheldon does it."
Once Georgie was all the way in, he slowly pulled back out, then pushed back in. Missy began gasping for breath, and Georgie was moaning with every movement. Feeling left out, Sheldon spoke up, "What should I do?" Missy looked at him, and, barely catching her breath, managed to say, "Come here and I'll finish you off with my mouth." Sheldon scooted so close to her that his penis was almost touching her face. She gave his penis a small lick, and then put the entire thing in her mouth. Missy began bobbing her head up and down in rhythm with Georgie's thrusts into her; whenever he pushed in, she put Sheldon's in.
After a minute, their speed picked up, making Missy become exhausted from the amount of work. Lucky for her, Sheldon was getting close. "Missy, I'm cumming." he exclaimed. Missy pulled her mouth off of him, causing him to cum all over her face. Once he had stopped, he collapsed backwards onto the bed. With Sheldon done, Missy was free to relax and enjoy what Georgie was doing; he had begun to feel up her butt, rubbing her cheeks and anus.
Overwhelmed by the tight and wet girl, Georgie couldn't hold back anymore. With a few grunts, and a few finishing thrusts, he came deep inside Missy. With the feeling of cum filling her vagina, she came as well, squirting onto Georgie's thighs.
Once both of their orgasms had calmed, Georgie pulled out of Missy's vagina, his cum dripping out of her, onto the sheets. Missy collapsed face first onto the bed, trying to catch her breath. "That was unbelievable. There's so much cum in me." she said. Georgie looked down at her naked body spread out on the bed, stating, "You weren't bad yourself." He jumped off the bed, and, gathering his clothes, headed out the door. Missy managed to stand and ran after him, dripping cum everywhere, gave him another naked hug, and whispered in his ear, "We should do this again sometime." Georgie hugged her back, and mumbled, "I'll think about it." With that, they both let go and Georgie walked out, closing the door behind him.
Sheldon sat up, recovering from what just happened. He looked around the room and said, "I guess we should start cleaning. You always make a mess." Missy shrugged, then got an idea. "Yeah.", she said, "I know how much you like cleaning, so I did it all for you." Sheldon was suspicious of his sister's thoughtfulness, but appreciated it nonetheless. "How considerate." he said. "You're welcome." responded Missy, as she walked out the door naked.
