Jeff's sister (Sarah) just got out of the shower and came back to the room to change. She drops the towel she had around her and walked over to the dresser and picked out a matching pink bra and panty set and slipped them on. She then went over to the closet and grabbed a tank top and below the knee skirt. Sarah slowly put them on trying to tease Jeff. She saw Jeff but didn't think anything of it. To her and everyone else Jeff has always been a living disembodied penis for as long as they could remember.
Jeff on the other hand forgot he toggled the reality shift button on the chronovac. He hid under the covers to see what his sister would do. Watching her intensely and not making a move. Seeing his sister drop the towel revealing her perfect naked body he was starting to get aroused. She turned around and bent over flashing him a view of her ass and pussy. Jeff was getting more and more erect. She was raffling through one of the drawers. He couldn't see what she was digging for but know it was going to be great. He finally saw her pull out a matching pink lace bra and panty set. She put the bra on top of the dresser before sliding the pantie up her legs, over her butt and hips. They hugged it perfectly and Jeff didn't care if he was seen. He got out from under the covers. Sarah then turned around and Saw Jeff in his fully erect state and smiled with a sparkle in her eyes.
So you finally decided to stop hiding and come out to play. Trying to hold back a laugh as she saw her brother in the state he was in. Do you need a helping hand. Well let me get ready for school then I'll assist you with your problem.
Sarah turned and walked to the closet and grabbed her school uniform. Still teasing Jeff the entire time. He was starting to drool the only way he know how at the site of his sister. She slowly put her top on one button at a time. Looking at Jeff's reflection in the mirror and how he was reacting. Squirming a little bit here and there. She then bent over to put her skirt on. As she was bent over she turned her head towards Jeff she asked. Do you like what you see? He couldn't respond just kept humping the mattress. After she put the skirt she walked over to the bed turned and lowered herself onto her brother.
As Sarah sat on Jeff she started moving back and forth on top him. Her grinding started off slow and steadily sped up. Sarah was getting wetter and wetter as she continued. Her panties were sliding to one side as her grinding went along. Neither Jeff or Sarah noticed being caught up in the moment. Jeff was was getting close to his limit and started him squirming faster. Sarah noticed and did the same. After a few more strokes Jeff slipped into his sister's pussy. Causing his sister to moan in delight. Her panties slid back into place traping Jeff.
There was a knock at the door shortly after. It was their mother. Hurry up or you'll be late for school she said. Knowing exactly what her kids were doing. Hearing here daughter's moan from down the hall. Sarah quickly stood up causing Jeff to go even farther in her. She walked to the door. Open it and seeing her mom there with a smile. Nice to see that my children are getting along so well her mom says. Patting her daughter's crotch and rubbing a finger across her clit through the skirt. Causing both of them to cum and Sarah dropping to the floor. Sarah in an exasperated voice says. Mom you can be so mean sometimes. Sarah's mom still smiling responded with. I know. Now it's time for school so get going. Your father will be taking you and you know he doesn't like to be late for work. Oh, I'll be picking you up after practice. Your father has a meeting and won't be able to pick you up.
On the way to school it felt like their father was hitting every bump and pothole he could. Jeff kept bouncing up and down making Sarah hornier and hornier clenching him tighter and tighter. She started playing with one of her tits and rubbing her clit. Her father noticed and was starting to get an erection. By the time they got too school Sarah jumped the center console facing him legs on either side straddling him. They started making out. Her father kneading her breast as they kissed. While her father was doing that. Sarah unzipped his pants and started grinding him. Jeff was getting pushed farther in with each thrust of his sister's hips. His head was hitting the entrance of her cervix when he felt a pressure pushing him in even farther from his base. When his head penetrated it and noticed he was stuck. His sister and father kept going. Sarah loved that there was two cocks in her and moaned in pleaser. Her father took this as a sign to keep going. Not noticing what he had done or realizing his son. Jeff on the other hand was feeling his father's shaft was rubbing against his own in his sister. Making him cum in his sister. Which made her cum and constrict around him and his father. Making her father cum. Jeff was concerned for his sister. Hoping she wouldn't get pregnant with they're child.
After a little time Sarah got off her father and had another organism doing so. Helping Jeff come loose from her cervix and her pussy all together with it being stretched out. She grabs Jeff from the seat hoping her father didn't notice. When her father grabbed her wrist and pulled her back in for a kiss. Then he asks that he could take Jeff to work if she wanted.