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A term used to describe some one whom with their great skill has defeated you. Also popularly used to describe the plus 4 card in UNO. Monsterbeast can also be used to describe the toughness of something.
A group of friends are playing Halo. Plex you monsterbeast!
Another example is a group of friends playing Uno. Hey man you got a crazy look in your eye. Why yes I do it's because I got a monsterbeast!
by Jonathon McElwain March 26, 2007
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