When I was 16 I went to visit and work for my cousin on his farm. They had a married foreman 41, named Cass, who had a boy my age but he lived with his mom. Anyhow, Cass was thin and rugged looking in a handsome sort of way. His tight jeans showed off his butt and crotch. You could see clearly the outline of his long cock and balls.
While leaning againt a fence watching two horses go at it, I told Cass I could see his cock and balls real good. He smiled and said 'yup'. He looked at my crotch and I had a hardon watching the horses. Cass asked me how big I was. I took out my six and a half inch hardon and Cass took out his cock and balls. Surprisingly, his cock was just an inch bigger than mine. His natural thin build showed off his crotch and butt to the best of their advantage. Since we had our hard cocks out we jacked off each other.
He gave me the greatest orgasm that I ever had up until that time anyway. Cass and me worked side by side on the farm. Since I was big for my age I could keep up with him doing the work. I sure filled out more and grew another inch of cock. Cass and I became regular mutual jack off buds, until fall when I had to go home and back to school. For the next two years Cass and me were still jack buddies during the summer until he moved back with his wife and boy. Those were the three best summers I ever experienced.