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1 definition by TROGDOR THE BURNINATOR !!!

 
1.
To accidentally excrete poo from one's anus into one's pants, generally due to copious amounts of alcohol consumption wherein all bowel control has been lost.
"Oh man... I got SO drunk the other night at this party, I Vanced everywhere... I had to remove my Vance pants and walk home in the nude".

"Hurry up in the bathroom dude!! I'm gonna Vance if you take any longer in there".
by TROGDOR THE BURNINATOR !!! March 25, 2013