Custom request - no names mentioned. Your sister comes into your room, she is all dressed up and ready for her date with her boyfriend, but he has cancelled on her, again! You tell her to dump him, but she can't. She is obsessed with his cock, the way he fills her holes makes her so horny. She brings up the time when you and her had a night together, you told her never to mention it, that it was wrong and that was the last time. But your sister is too horny now, she's a whore for cock inside her arse hole, and she wants her brother deep inside her. You know you can't resist her arse and cunt.