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A term to describe a butt that is unusually big. This will make you stare and maybe even drool. The official way to determine this is an ass to waist ratio of 10 or higher, however when it cannot be measured it is discretionary.

booty geography will tell you where this is the most common and least common
(girl walks in)

Boy1: (stares at girl with eyes wide) DAMN!!!!!

Boy2: (stares at girl with eyes wide) That girl is super thick

Boy1: (still staring) She's got an extreme ass
by Optical Epilepsy April 29, 2010
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Oct 3 Word of the Day
I couldn’t care less (but one must keep up appearances, right?)
Frenemy has a family tragedy. "Thoughts and prayers."
by November 05, 2018
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