Related to previous topic:
Maybe this is what a lot of homophobia is rooted in, as well? Like, a lot of dudes, when they hear their friend is gay, react like this:
"Oh. Uh, so, um. Am I turning you on right now?"
It's like they're afraid that the gay dude will turn them into a sexual conquest, and men don't want to be sexual conquests. Women don't either, of course, but society tells them that it's okay. Men are deeply afraid of being objectified.
Sidenote:
This would be the thing I would hate the absolute most if I were gay. It's like suddenly, people think you're this weird pervert who gets turned on by 50% of the human population, all of the time, always. It would suck.