This happened a few years ago when I was fourteen and my cousin Randy was fifteen. Randy and I have always been pretty close. Our mothers are sisters and only two years apart so they always hung out together.
My mom and Aunt Shirly (Randy's mom) decided that they wanted to go on a double second honeymoon. So Randy's and my parents left us home alone for five days when they went on their second honeymoon. We decided to stay at his house since we wanted to hang out together but we lived a good thirty miles away from each other.
The first two days were normal, just us hanging out, watching TV, playing video games, being lazy. Well the third day we were home alone we were flipping through channels on TV and found a porno on on of the pay channels his family got for free. We decided to watch a little of it. It was a threesome with two guys and a girl.
I got hard almost instantly and I noticed that Randy was semi hard too. Neither of us did anything, we just sat there and watched the porno until it was over. After it ended I asked him if he jerked off. He said he had tried it once or twice but never had an orgasm. He asked me if I did and I told him how I did it almost everyday.
We moved on to a different subject and nothing else was said about it until we were in bed that night. It was probably around 11:00 when we headed upstairs. We stripped down to our boxers since it was summer and hopped into his queen sized bed. We lay there talking for a while when the topic of sex came up.
'When you jerk off and cum, what does it feel like?' He asked. I thought it was rather odd that I was telling my OLDER cousin this stuff. 'Um, well it feels really good.' I said. 'Do you want me to show you how to jerk off right?' I asked him. He nodded.
I pulled off my boxers, exposing my hard 5.5 inch uncut cock. He took off his boxers too and his dick was about six inches hard and he was cut. I took his erection in my hand and started moving my fist up and down gently on his cock. He came almost instantly, shooting out in four hard spurts. Then he just sat there and watched me jerk off. Then we went to bed.
In the next three days we jerked each other off countless times and we still jack off with each other to this day.