I was 18 and hanging out at a friend's house over night. He had a girlfriend. I had been seeing a few girls too. We spent the day on our bikes and playing basketball. Later in the evening we were playing Nintendo on the living room floor until his parents went to bed. Then things got a little more interesting.
He said he wanted to show me something. He turned the TV to Cinemax. His parents were religious so they didn't subscribe to anything like that but their screen actually showed a lot more than I had seen on TV before. There was a movie finishing up with a younger girl who slept with her father's friend. Then the next video was two women kissing and touching each other. I was hard as a rock after a few minutes, and from the way he was shifting around the floor I could tell he was turned on too.
I asked him what he thought it was like for them being with a member of the same sex. He said he didn't know, but I could see the wheels turning in his head. He suggested we give each other turns with the TV so we could get some relief. It was pitch black in the house except in the front of the living room where the TV was. My stomach felt funny as I realized how hot the idea of him touching himself seemed to me.
He sent me away first into the next room separated by an archway. I didn't really like the feeling. It was dark in there, and I was in a house I wasn't familiar with. I decided to look over toward where he was in front of the TV. It was about 20 feet away so I couldn't see much but I did see movement and could tell his shorts were down around his ankles. I started grabbing at my own cock and had that funny feeling in my stomach again. It was just too weird. I was getting turned on watching another guy half naked and masturbating.
I whispered in to him to get his attention and asked him if we could switch or something. He pulled up his shorts, and I went back into the living room. Our shorts weren't really hiding much at this point.
I offered to let him stay and said we could just promise not to watch the other or maybe just keep our shorts on. So he sat down a few feet away and reached into his shorts. I followed his lead and worked on myself inside my shorts.