During the summer months my brother and I used to pitch a tent in our back yard, as it was very hot sleeping in our farmhouse. It was common for us to have friends sleep over, especially if they were hired to help us on the farm.
One night a friend of my brother was sleeping over. Rob was often at our house, as his brothers were older and he didn't have anyone his age to hang with. Rob was about 15, my brother 14 and I was 11 at the time. I really found Rob quite obnoxious, as he was always trying to wrestle me and pretend that he was going to shove his dick in my mouth.
On this one particular night we were in our sleeping bags and the conversation got to girls, sex, etc. Rob was bragging about his dick size and questioning me as to whether I had entered puberty yet. My brother seemed to stay out of the conversation this time. I challenged Rob to show us his dick since he was bragging so much, (actually I was curious to see it) but all he did was tried to get me to stick my head under his sleeping bag. He finally convinced me to give him a hand job, saying he would play with my small dick when I was done.
I attempted to pull back his sleeping bag to see his dick, but he wouldn't let me. He just took my hand and placed it on his hard dick. I did what was natural and started to jerk it quite fast, as I usually did to myself. He quickly grabbed my wrist and told me to slow down (apparently uncut guys are more sensitive). This didn't last long until I noticed his breathing change and he started shifting his body. Next thing I could feel my hand was wet and sticky and I sort of knew what had happened, as my brother had taught me all about it.
He cleaned up with a tissue and then I pulled out my small dick for him to play with. He looked at it and roared with laughter saying how small it was. I didn't really care, so I used his cum which was still on my hand and jerked myself to a dry orgasm that felt great.
My brother didn't partake in this event, but he later told me that Rob wouldn't show us his dick, as he was uncut. Most boys around our area were cut and Rob felt a little self-conscious. We never talked about this night again, but he continued to tease me and even to this day he is still obnoxious.