I was at a Christmas party with a bunch of college friends today, and my old roommate starting making sly references to the drawings of women I used to do. (Hint: they were heroically proportioned.) Now, the hilarious thing about him is that he wasn't oriented in an entirely different direction - buff swimmer girls turned him on. He used to keep catalogs of women's competition swimsuits and speedos in the bookshelf near his bed.
So I said, "Roommates are supposed to keep each others' trust, and each of them knows enough to damage the other in the event the other breaks the trust." His wife was standing nearby and that shut him up pretty damned quick.
Pretty hilarious! I sometimes wonder if people I was with at school/uni might have secretly had similar tastes to me. I dated a girl on the university rowing team and another guy I got to know also dated one of the team. I always wanted to ask him if he found their muscularity sexy too, but was too shy at the time. (rowers get great upper body development, natch).