Top Definition
n. a girl having an enormously large and round and juicy and vuluptious ass, usually associated with having the tendency to knock shit over. Its almost to the point where it is too large and gross but it is still hot. (awkward stage of anal growth).
Ange is such a buttasaurus that when you do her in the butt its like your penis is being eaten alive.
by mierschy August 14, 2006
5 Words related to buttasaurus

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