My dad and I were watching his horses have sex. Mom and Dad were divorced and I was visiting him at his farm on his 33rd birthday.
We were standing behind a solid corral fence watching them have sex. No one could see us. My dad asked me if I masturbated. I said no, that I didn't know anything about it. However, me and Dad had hard- ons. Dad opened the fly of my jeans and took out my cock and jacked me off. That was the most pleasurable thing I ever felt. I spurted my cum all over the ground.
Dad was flabbergasted that my cock was so large at my age. Almost six inches. Dad then took out his cock and jacked off matching me with the volume of cum even though his dick was about eight uncut inches. We continued to watch the horses have sex and we got horny again and he masturbated me again, (just like the situation in the Sept 21 story called Taught by Monkeys) and this time I masturbated him.
We continued to watch the horses for a while then went into the house. I am very grateful that he showed me how to masturbate.