thass

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

"Look at the thass on that!"

by Miss White of the WFSU crew AKA Karena July 18, 2006

thass

Thass; the thigh / ass crease or more importantly the lack there of.

Her ass has become one with her thigh , where there was once once a seperation there is no more.

by Jesse February 21, 2005

thass

The region between your thigh and your ass that pops out to the side when you walk. Usually occurs with girls who have big thighs and a big ass.

man 1: look at that girls big ass!

man 2: yeah but look at the nasty thass that comes along with it.

by kiki swag April 19, 2009

Thass

The Crease of the thigh and your hip.

The ass of the thigh.

Damn , her thass is so fine!

by _Hesh_ April 27, 2018

Thass

That crack when your thighs and ass come together.

That thass is lookin thassy👌🏾

by Mjdidntdieiswear December 09, 2016

Thass

where ones ass and thigh look like its merged together

Look at the thass on him, he shouldn't wear football pants.

by ilovemanning10 September 11, 2008

Thass

That small area on either a male or females body,that is right between one's ass and one's upper thigh,could be the crease or just that area that on some people just blends together.

Oh that hurts, a spider just crawled up my leg and bit me on the thass!

by 4you May 07, 2009