Tbe area under a fat chicks butt that looks like another butt.
the Kardashian sisters have butt cankles.
by 3388djc June 22, 2012
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When your butt displays the same properties as your cankles. Aka fat ass
That chick was twerking and bumped into a greyhound bus causing it to roll over with all that cankle butt
by Twin Brother Darkness April 29, 2016
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