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1.
what a man says when he surprisingly slips his cock into another mans ass
Carmack said woopsy, then sprung a load into chi phi's buns.
by creamyy October 24, 2007
 
2.
the suprising appearance of a boy in the corner of your t.v. screen while playing the original mortal kombat for Super Nintendo.
i was about to kill Sub Zero when all of a sudden a woopsy appeared.
by Sniper collins April 25, 2006