Right-Hand Chicken

A game begins when two or more men masturbate themselves in front of each other. A person loses if they stop masturbating or ejaculate. The winner is the man left hard and dry.

Disambiguation: Girls can do it too. (Spurt=Squirt)

Eric: "Hey Carl, wanna play right-hand chicken?"
Carl: "I lose."
Ben: "Get out of my room."