1 definition by @n0+3r p3r50n

A thong lost in someones fat ass. (donk)
"Dude she gotta a donk so big that thong looks lost in there!"
"Man thats what you call a thonk cause indiana jones couldn't find that thong lost in that fat ass!"
by @n0+3r p3r50n April 26, 2010
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