thass; the area in which your ass and thigh join as one. there should be definition between the two, a thigh... then your ass, creating a "shelf" if you will. but when you start to gain weight you loose that definition, thus creating the infamous thass.
*cousin to the kankle
*cousin to the kankle
"Look at the thass on that!"
by Miss White of the WFSU crew AKA Karena July 18, 2006
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There's no one better than ThaSha.
by Master spiral December 20, 2016
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Get the Thas mug.carolina from the old tacoma airport who lived in the bumshack and roams the airfield is thashizzle, he knows what it do.
by sniffing soda dakota January 6, 2008
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by Thuglife2131 April 22, 2018
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