Top Definition
An extremely fat chick.
she's a fatosaurus. She could eat the whole bucket of chicken on her pown
by john mine January 23, 2008
1 more definition
1)An extremely obese math teacher in northeast Ohio. Usually teaching at Braden Jr. High.
*Loves Domino's pizza

2)A person who is fat beyond belief.
Person 1:Gosh, look at that fat ass over there!Looks like he or she is ordering pizza!
Person 2 :WOW! What a fatosaurus!
by Raina.Jean December 03, 2008

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