Everyone always says that your sister looks a lot like your girlfriend. You kind of see it but whatever. Your girlfriend (so you think), calls you from a blocked number saying she has borrowed your sisters clothes, and is in your bed and wants to role play. You can't say you've never thought about fucking your sister..but it's just roleplay. You get home and she tells you not to turn the lights on. She is really into character. You fuck her and creampie her which she never lets you do. You turn the lights on and you can't believe it. You really just fucked your own sister. (sister, brother, trigger word, dirty talk, taboo, ebony, family)