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much like a cankle, when you can't tell where a persons buttocks ends and there thigh begins
(friend 1)Dude don't get mad but your mom has thightocks

(friend 2)you're a jerk
by flamethrower dick August 11, 2010
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2
The area between your thigh and buttock.
Don't make me spank your thightock!
by EvBrox November 07, 2019
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