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1.
Forcibly stripped of one’s trousers, usually in public.
As punishment for taking a third helping of cilantro cheesecake without first asking for permission, Johnnie was mercilessly jeered, then depantsed and soundly paddled.
by Big Bank Hank April 14, 2004
 
2.
to pull down someone's pants.
gary depantsed me in the hall - it was so embarassing!
by ad November 19, 2003
 
3.
When one has their pants and underwear pulled down, usually in public for maximum embarrassment.
We giggled uncontrollably as Kate depantsed Ryan in the middle of the crowded mall!
by super hot Sarah May 19, 2010