machine nut
A machine nut is when two guys sit next to each other and try to cum as many times as they can. The one who stops first is a total piece of garbage, and the winner gets to shove his junk up the loser’s butt until he cums inside him.
I did a machine nut with my bro. He lost and now he’s stuck with me forever.
Machine nutting is the best. I cummed three times and he only did one.
My friend did a machine nut and now his butt smells like cum.