Curtain sex is when you come home and you see a penis sticking out from between the curtains. Instead of calling the police like a normal person, you flick it, suck it, then insert yourself on it.
Eva: Oh my god I had the best curtain sex yesterday!
Bob: Weren't you afraid?
Eva: No! *breaks down crying*
Bob: Weren't you afraid?
Eva: No! *breaks down crying*
by DjFarmor January 26, 2019
Curtains placed around a bed, usually in a dorm room. They add a feeling of privacy between what is going on in the bed, and what your roommate and/or other people in the room can see,hear,smell,feel etc.
by Bress March 31, 2010