My uncle (mom's brother in his mid 30s) used to live with us for about 3-4 years. I caught him too many times to count. The first time I caught him, he was laying on his side and I could see only his backside, arm making the movements of jerking it really hard and extremely fast. I remember being fascinated with the sight of his tricep muscles contracting the way it was. I had no idea what he was doing as I was 12 or 13 at the time. For some reason, I was completely and totally facinated by this act. I saw him doing it a couple other times when I finally decided to try it out and figure out why he was doing what he was doing. I remember I planned out a time and place as to be discrete. I did it and noticed it felt good... and even better the longer I was doing it... and then it was just amazing until I came. There was no cum, but from then on, I started doing it about three times a day.
Somtimes I would peak in his room and watch him. He was probably a little bit above average, 6.5" maybe, average gurth, about 5" maybe. Uncut like me. I became facinated with masturbation in general. He would do it at least once a day, if not more. So I caught him many times. My heart would beat incredibly fast and my hands would shake whenever I would see him masturbating. It was like watching him masturbate any time was like watching him for the first time, which ultimately lead to me trying it out and discovering something incredibly pleasurable.
A year later or two later, I took it to another level and planned a way for him to catch me doing it. I knew he always used to go to the kitchen at night and grab a bite to eat or something to drink when everyone else was asleep, so I sat on the couch, rubbing kinda slowly with the light on (the living room was on the way to the kitchen). He passed by and briefly glanced. I grinned and said, "oops, you caught me." He chuckled and waked to get something to drink. He stared at my dick as I fummbled to put my underwear back on. He left and I pulled by underwear back down and went at it again. He caught me again when he returned to the kitchen to put his glass away. I don't remember how it came to be exactly, as I tried to forget I ever allowed it to happen, but he came up to me and said something like, "that's not how you do it... faster". He also said something like, "fuck, you're only 14/15 and your that big already... bigger than mine!" He pulled out his dick and jerked off too. I remember my heart beating sooo fast. Then he grabbed my dick, and I asked him what he was doing. He said he wanted to compare the size. I said OK. I was starting to feel ashamed, so I told him I was going to bed. I went to my room and finished and had an amazing orgasm. That was the first time another person ever touched my dick.
There was maybe one or two more times... actually, now that I think back, there were probably more than that... where he asked to see my dick. He'd pull his out and touch my dick while stroking his. I found this odd as he had all this girl on girl porn and always talked about women and licking pussy, etc. It excited me to see another dick in person. I think he was very curious and purhaps turned on by my large penis. Sometimes he'd initiate it, sometimes I would. I remember touching his penis a few times. It was amazing to feel another penis beside my own. I don't remember if we ever came together. I do remember one time he asked me if he could suck my dick. I turned him down. A part of me wanted to, but I didn't want my first sexual experience to be with my uncle!
I never told anyone about this. I was ashamed for a long time. Later, as of a couple years ago, I shared this with my best friend. First time I ever told anyone about it. I was never attracted to him, only to his actions of masturbating and just the thought of another penis beside my own.
To this day I still don't know weather this could me catagorized as incest, molestation, just curiosity, or what. I am extremely turned on by voyourism and exhibitionism now. The idea of catching someone (or someone catching me) masturbating turns me on tremendously to this day.