Two men sharing a room and woman.
e.g. Eskimo Brothers
Those two guys moved in with this chick and became Canadian Roommates
The risky act of opening your room/residence without knocking and hoping to not find your roommate in the middle of a sexual act
Sam: *thinking* ‘my roommate stepped out I should be good for a quicky’
Darrel: *opens room door without knocking* brother eeewwhhh!!!!!!!! You have caused me to lose roommate roulette
Co-parents/Non married couple with a baby living together
Susie and John Dick were roommates and they had a baby together and now she’s a babymama roommate
Males only. There's really no way to win, but you lose when you see your roommate's dick.
"Yeah, he made me lose the roommate game."