They are usually bars where boys go late at night to make out with strangers and engage in a little slap and tickle in a dark corner.
There are some bars we don't want you to go to. Remember when I said we love it when straight people come to our bars? Well, that's not always true. No one wants to fuck you here, so you're going to need to get the fuck over yourselves. You're still pretty and special, even though no one is buying you a drink and inviting you to the VIP room. Now, you need to get used to it, no throwing fits and bitching and moaning because no one is going to put you on a pedestal (or let you dance on a go-go platform). Congrats, ladies, this is how men feel in straight bars. They have to wait for the one tiny restroom (which has probably been co-opted by boys and drag queens anyway), they don't get to annoy the DJ to request songs, and the (probably shirtless) bartender is going to take their order last.
Women, while fun to have around, are practically invisible at a gay party. Everyone is catering to open the velvet ropes between a woman's thighs. That's because if there were no women, men wouldn't spend money to get them fucked up and try to sleep with them. Women are used to being let into clubs first, not having to pay a cover, served at the bar quickly, and basically allowed to do whatever the hell they want to do in straight bars. This is the most important lesson for all ladies to know before they step foot in a queer establishment (unless, of course, it is the fabled lesbian bar).