Definitions by C-troubalicious

Buttshank 

(noun, adverb) The act of or actual splash of cold toilet water splashing onto one's bare ass caused by the poop plummeting into the water basin and displacing the water below.

WOW. My ass is really wet from that buttshank.
(insult) You buttshank, go dry your ass.

Buttshank by C-troubalicious February 12, 2006