I had a lot of fun with a friend when I was younger and this is one of those encounters
When I was younger, I had a best friend who lived down the street, but he went to a different school than I did. So we hung out mostly on weekends. His super old grandmother lived two blocks away and we'd go over there on Fridays after school to help her do chores and then sleep over until the next morning. One Friday after his granny had gone to sleep, we discovered that she had all of the movie channels and started watching one of the soft core porn channels. I had personally seen stuff like this many times before, but he had not. When I told him that I had seen porn before he got really interested and started asking me all sorts of questions about sex.
I was really turned on and I could see he was too. So I asked him if he played with his penis. He told me that he had, but he had never felt like this before. I asked to see his penis and he said only if he could see mine first. So I took of my pants and underwear and showed him my small erect penis. He asked me questions about how I did it and told him I'd show him if he wanted. I started stroking and focused on the tv which was a lesbian threesome. Soon it started to feel really good and I orgasmed dry at the time. Then he asked me if I'd touch his penis which I was happy to do at the time being so turned on.
We turned the tv off and went to the bathroom and he asked me to get my hand wet. Obviously he had a lot more experience than he had let on, so I turned the faucet to warm and got my hand wet and started to stroke his penis like I'd stroke mine. He closed his eyes and told me he was thinking of the things he'd saw on tv. I asked him what he liked the most all the while continuing to jerk him off. He told me he liked it when the woman licked the other woman's asshole. This was something that really turned me on and so I asked him if he'd do that to me. I stopped jacking him and he told me I had to clean out my asshole really well. I wiped and then used water from the faucet to make sure I did a good job. I turned around and he got on his knees and spread my cheeks and started licking. It felt really good, but I knew I could never get off this way. So I asked if he wanted me to do it to him. He said yes so he repeated what I had done to get myself clean and he turned around and I spread his ass and began licking. It turned me on way more to be licking him than to have him lick me.
Neither of us came from this, but I really enjoyed being close to him like this. I'm not gay, but it was really fun. Later we got in bed naked together and just touched each other and talked about sex until we fell asleep.