your big sis comes into the 'hotel' room in a towel, she gets upset with you because you're still not ready and our familys wedding is in less than an hour. your sis is also upset because she has to share a room with her annoying little brother. she starts poking fun at him and starts a mini tickle fight, as her tits slip out she notices her little brother cock has slipped out of his boxers, but plays it off like she didn't see anything. a few seconds into the tickle fight, her brothers cock somehow slips inside of her. she shocked and doesn't know what to do at first, then she tries to get off - except her little brother is pulling her back onto him. then he starts to slowly fuck his own sisters pussy. she reluctant at first because its not right since you two are siblings! Then she gives up and starts to ride him back and as she is about to orgasm, she tells him not to cum in her - but she was too deep into her orgasm to stop him. mom comes knocking at the door to see if we're ready - well it looks like she has to sit through the entire ceremony with her brothers cum inside of her.