When I was 13, I asked my dad to tell me about masturbation and sex. Even at that young age I had a 5 inch uncut cock and could cum real good.
I already knew about it all, but I wanted to see dad get a hardon and hopefully jack off for me when the talk got heavy. He was a 32 yr old macho good looking bodybuilder professional wrestler. However, he asked his bud Jason, another handsome pro wrestler to do it for him because he said he would get sexed and jack off which is what I wanted him to do.
We three went to visit my uncle at his farm one day and dad's bud and me were watching the horses go at it.
We were standing behind a wooden barrier to the corral and Jason got a hard on. He said now is the time to tell you stuff. Instead, he took his cock outta his jeans and started to jack off his 7 1/2 incher, and he told me to watch him which I sure did, and I took my cock out and we jacked off together. It was so sexual we gripped each other's cock and jacked off each other shooting another good load of cum.
I told my dad that Jason told me what I needed to know but not the mutual jackin' off part which we did together for about 4 yrs.
(I got my chance to see dad with a SUPER hardon when we took a shower together. We soaped up each other real good and I just naturally soaped his cock and balls and jacked him off then I jacked off. I jacked him off about 15 times or so like that and then he said he was uncomfortable with me jerkin' him so I stopped. But he would watch me jack off and then he would jack off himself. I was satisfied.)