14
The are area of the body between your ass cheek and your thigh....
Thass nice.
by TIVA November 19, 2015
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16
Much like Cankles, where the ankle and leg are one, Thass is a terrible condition where the thighs and buttocks area are one smooth surface. there is no difference between the two.
Dude A: Man, that chicks ass is so low.
Dude B: Naw man, she has no ass. Its just thigh.
Dude A: I'm confused, Where is anything?
Dude B: That chick has terrible Thass!
by GunzFayle March 17, 2016
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17
the crease between a girls ass and thigh,creating a little line called the thass
by big boy jaxson July 02, 2017
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