My biggest pet peeves are:

Children

When people say "poisonous" instead of "venomous" when referring to snakes. There is only ONE species of poisonous snake, the Pelagic sea snake!

Oh, and I have a lot of gay/bi friends, and I've gone to gay/lesbian clubs just for the sake of going. I see no problem with making a big deal, as long as it's in a positive light.