Are you having anal sex? Because it turns out quite a few of us are game for butt stuff. I've long said that all guys should try it at least once, because the guys I've been with who are into butt stuff really love it , but even sans prostate it can be a pretty great time. And you may agree, because at least one in three straight women in the U. This was from a study in the Journal of Sexual Medicine which looked at over 10, heterosexual women between 15 and 44, so it's a pretty diverse group age-wise.