A girl who has been single for a while, so one of her girlfriends tries to hook her up with one of her boyfriend's guys by telling them she's easy and is down to fuck. But, after seeing how fat and ugly she is, the guy runs away. The girl is described to be a fat, ugly slob, and who is usually slutty. She is oblivious to the fact that no one wants to fuck her.
Dude your girlfriend better not be hooking me up with manbearbitch again.
A person who frequently pretends to be sick when they clearly are not, they also steal girlfriends, and boyfriends or both. These people suck.
"Franco, don't be manbearbitch"