Let me tell you first that I am bisexual but not fully gay. But I have a strange fetish.
Let's begin with my friend who I will not tell his name. I always wanted to be a massage therapist and I always asked him if I could practice on him. We were both 14. He would agree and he would lay on my bed on his stomach. I would always start on his shoulders and I would work my way down all the way to his lower back then I ask him to roll over. He would always have a erection after I got close to his butt because he told me a long time ago that when people rub his butt for any reason he would get and erection. I would ask him to take his shirt off because at this time I would get horny. I would start on his chest (I bet you're wondering when I will tell you about my fetish but I will tell you...) and his nipples would be hard. He told me that he went to see a doctor about that and he said that little amounts of estrogen is in his body and causes his nipples to get hard. I would get to his abs and ask him to take off his pants but not his underwear and I would see that he is hard. He had nice briefs on. I would get close to his dick but the moment I would get near it he would tell me to stop and then he would get dressed. I always liked the smell of peoples privates and I could not find out what he smelled like so where else could you get the smell but in the underwear. So when he was sleeping because I slept over at his house I went into the laundry room and took a pair of his dirty underwear. So that's my fetish: underwear.