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means to consume/eat food.
I can't talk right now. I have to mastacate.
by GurnMon October 09, 2005
An act of masturbating. Usually is said as if you were playing the penis game. A reatarded word made up by retarded people.
In a classroom: oh my god robert stop mastacating!!
In a crowded elevator with a friend: masatacate!! MASTACATE!!!
by ya im jewish September 26, 2005