Definitions by TehH4x

mast 

V- To masturbate, often with the aid of porn or in a circle of people masting. Usually accompanied with an "aww yehh!"
V- To ejaculate.

N- A single act of masturbation.

1- My friend and I like to watch each other mast and go "aww yeah!"

2- I masted all over her face last night.

3- I think I'm gonna get a mast in before class.

mast by TehH4x December 30, 2007