My friend, I'll call him Ben, had been grabbing my nipples before school and I had been grabbing his back. Then one day we were at my house when my mother had to leave and left us by ourselves for the rest of the day. We then grabbed each others nipples, and kept grabbing them.
I then said let's take our shirt off because it's hot in here. He asked me if it was because I wanted to see his nipples. I said yes and he wanted to see mine also. So we began feeling each other's nipples and boobs with our shirts off. I then grabbed his ass, and he grabbed mine back. This set off another game of trying to grab each others ass. He then mooned me and I grabbed his naked ass. After that he stuck his hand down the back side of my pants and kept grabbing my ass.
We then took off our pants and saw each others bulge through our underwear. I sent my hands up to his crotch and felt him and he then started to do the same thing. I went inside his underwear and pulled out his penis. He did the same to me. I then pulled off my boxers and he followed. We started to jack each other off and I also fingered his ass some, while I gave him an orgasm. He then followed me and we kept giving each other orgasms that afternoon. We are still friends and give each other handjobs, even though I get a girl do this for me now.