At the last party I went to (before last night, I'll add), I was sitting on this futon next to some guy I'd never met before, and this girl in a really skimpy, tight fitting dress sits on this guy's lap (and on me, without realizing it), and starts making out with this guy.
Now, I can't get up because she's got me pinned between her and the side of the futon, and I'm trying to be cool and not step on this dude's toes or anything. Five minutes later though, I want another beer, and I got tired of waiting for them to go elsewhere. So I ask her if she can scoot over a little, and she about jumped out of her skin when she realized I was there. It was hilarious.