1 definition by Lalalalala69

1
Is a term used to describe a teen that didn't just hit puberty, he beat the shit out of it. When a person is called man beast, it is usually because he hit puberty before a lot of other teens.
Person : "Dang dude. You used to be all fat, but now your freakin ripped. Your going man beast! "
by Lalalalala69 February 20, 2014
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