Top Definition
Someone who constantly drinks Monster energy drinks.
Frank: Tom you're a Monster Freak, try some juice please.
Tom: No thanks, ill stick with my Monsters.
by DJ teh Beast December 27, 2009
1 more definition
5 Words related to Monster Freak
a one man ass kicking machine.
I was Playing Call of duty MW2 and Matt is on there beasting like a MonsterFreak.
by joltfreek May 26, 2010

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