Wow, I'm slightly shocked by the responses in this thread. I thought stoners were a bit more open-minded/adventurous, or maybe I was thinking about e-tards?

Anyway, been there, done that, had it done to me, with a decent number of girls. I found it most likely won't happen with a one-night stand, you typically have to be in a relationship with someone before you ask them to tongue punch your puckered starfish. Most chicks I've been around don't really feel pleasure from that area, unless you're already stimulating them somewhere else. My current girlfriend doesn't like it all that much (I guess I just like to lick ass), but doesn't really dislike it either. However, if I really work her up during sex, sometimes she'll ask me to pop one of her dildoes back there, or I'll just pop in my pinky.

As far as getting it done to myself, YES YES YES! Definitely one of my favorite sexual acts. Sometimes when I'm just not getting off via sex, my girlfriend will lick my asshole and suckle my balls while I jerk myself off. I'll end up finishing in a minute or two when sex would have taken another 10-15 minutes. I don't know if I could be with a girl that wouldn't lick my ass eventually, it's just too much of a pleasure to give up.