OTer means he's got things going on that are Off Topic. So like, if you're talking about the weather, he can suddenly ask for a blowjob or something, thereby changing the topic.
Yeah, they do it illegally. As for the reason why I don't like them is a looong story. I'll tell you one day, though. As for now, I'm much too lazy and also too busy to explain the entire thing.
And I don't really involve myself in the bitches' drama. I try to stay away from them. XD Oh, and usually what most people do for fun here is chill downtown, like most other places.