The first time I was 12 and I was sleeping over at a friend's house. There were several of b we were all sleeping on the living room floor.
Before I go further I need to give some context. I always had bisexuality tendencies. I was always hyper--sexual and very attracted to women. At a young age I had discovered porn. I was fascinated by it and I masturbated to it regularly. I was never attracted to men (still am not) but I was very drawn to the dicks of the men in porn; the bigger the better. I remember the first porn I watched had a guy with an average penis like mine.. I focused on the sex and the women. But the first big cock porn I saw had me very very turned on. I loved the way it looked, so beautiful compared to mine; and the cum, so much cum, shooting out of that beautiful cock with so much force. I remember that quivery feeling I had in my stomach watching it. Hell, I feel that quiver now just thinking about it.
So, there I was 12, sleeping in the living room with a bunch of friends at my buddies house. He had an older brother... maybe 16? I didn't really think much about him. But, in the middle of the night I woke up with him next to me. He was putting my hand on his erect cock. It was dark, I couldn't see much but his was only the second cock I had ever had in my hand. The other one was mine. My god, it was so much bigger than mine. I had seen how girls fingers never touched when wrapped around a big dick. Mine overlapped and I was hyper-aware of that fact. With his cock in my hand it was such an amazing feeling, my fingers didn't connect. My hand felt so full. He whispered for me to put it in my mouth. I wanted to so bad and I was so scared at the same time.
I did what he wanted, timidly. It was so hard yet so soft. It had a taste that was subtle yet I was hooked immediately. That taste, that smell had my heart beating. I tried to do what I saw in porn. I was probably awkward and I gagged a couple of times but it didn't matter. He came quickly. I recognized the quickening of breath, the tensing of his body; I had those same lead ups to orgasm during my many masturbations. But this was different.. I wanted him to cum, I craved it, I needed it. I wanted to be those women I had seen in porn, sucking and stroking a big cock and seeing, feeling it cum in my mouth, on my hand, on my face.
His orgasm surprised me... so much muffled grunts, so much longer in duration than my own and so much cum. It filled my mouth in spurts and while I couldn't see it, measure it, I knew it was so much more than mine. Years later I realized that was a huge part of the turn on. I was turned on by the fact that it was so much bigger than mine, came so much harder, longer and copiously than mine. Again, my heart races thinking about it I never again did anything with him. I masturbated to it countless times and I wish to this day that I could have had him in my mouth a hundred times. I deeply regret never having seen what I know was a beautiful cock; never having seen it throb as cum shot all over my face.
Wow, that was a bit long winded but what a great memory.