1 definition by orphan annie

a colossal amount of any substance, or anything of enormous size. etymologically derived from the ebonic phrase "yo ass is," but adapted to convenient modern pronunciation through many years of dialectic moosh ing.
Oh god, I have a jurassic homework load tonight!
There goes Jurassic Breasts, busting out of those double d's.
by orphan annie January 13, 2006
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