As a heterosexuals, I'd say my wife and I both have a primal instinct to for penis-in-vagina sex. It's kind of natural (to us, anyway). From time to time, we have other ideas as well. We happen to think that anal sex is not really so great at all. Do gay men do anal sex because it's the natural place to release, or is anal sex for them still an "acquired taste" like it would be for me? Are there some gay men who don't like anal sex? What's the classic sexual activity for lesbians?