Depends on how valuble they see you as. If you're more trouble then you're worth they might just leave. If you piss them off enough they will cause some shit and then leave, maybe with some of your stuff.
that's funny, he threatened to leave (to our roommates), which almost, almost made me feel bad for isolating him, and then i remembered that he still hadn't replaced my bathroom rugs.
i know, i already took care of this. what i'm curious about is how he might take revenge..i can't seem to help provoking him and i can tell he is someone who isn't used to it.