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Thanosabsolute unit of a thicc left asscheek
Thass by Thass October 1, 2019
Where a behemoth-like lady/midget (could be a midget they aren't something we types call "very well heightened-off-the-ground". And in due to such circumstances, these ladies legs turn from fat uhh fater. So-so-too many hungry man's.
It's where some most likely depressed 50 yr old gives up and gets so fat where the fat ass thigh merges with the fat ass.
AKA THASS.
Thigh/Ass = fat thighs merging together with the fat ass.
Looks like zeus mixed with the kragon from clash of the titans.
Hi, Wal-Mart can I get a job as a greeter? Thanks
"Wow, ever heard of the stair master or even walking, this isn't what's eating gilbert grape day? - although I do know that u cant wear white after labor day sooo donkey punch much? "I see the thigh...wheres the ass?" "Oh honey, that's a thigh-ass" "Oh, a Thass?" "Yeah shut the fuck up and make me some michelinas macceroni and cheese. And microwave it this time you fuckin scum." "And is that a FUPA?" "Oh hun, we'll save that conversation for another time."
A very Thick Ass
Me: Damnn, Did u see that THASS?
Donald: yuh bruh she stupid thick
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.
thass by kiki swag April 19, 2009
A mammoth, massive ass that spills wide and heavy onto the back of the thighs.
Lamont: Yo' Mell, look at the ass on that stallion! Unh....its so damn big, I can't believe it (stares in atonishment)!

Mell: That ain't no stallion! That's Schwalla. Her swoll thass makes her waddle when she walk.

(both laughs out loud; grab/rubs nuts)
THASS by SeanBC214 October 12, 2011
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!
Thass by GunzFayle July 22, 2016