Top Definition
A phrase used to describe awesome things.

The most awesome/amazing/incredible thing you've ever experienced, put to the power of infinity, multiplied by itself since the beginning of time, until forever.

Used as an adjective in order to describe certain things.

Can also be used by itself.
That was one Size Beast party.

I just had a Size Beast meal.

SIZE BEAST!!!

That was Size Beast.
by E.N.D.M.E. September 18, 2011

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