My only ever "three-some"
I was 9. Had to help a girl in my class with her part of our group science project. Her cousin was there. Finished way early...they decided to play house. Since there was only 3 of us, had to be the "default husband"

Dryhumped both of them...I had to take turns with both of them. Shit seemed like normal...came home and played Super Mario 2 for the rest of the Saturday.

I look at that now and just am like wow