I HATE WHEN:
1. A guy pulls my hair as I'm walking by, saying it's not really mine
2. Guys touch my butt or breasts, then get mad when I tell them not to do it anymore
3. People who can't handle their liquor decide to lean all up against you like they know you
Oh yeah, I always just try to stand close to the bar when I want someone to buy me a drink. Usually works.

Sometimes I just ask a guy who's buying himself a drink to buy me one. Works a lot too!