Top Definition
It's when you been sitting for a long periods of time(in a warm climate, warm room, etc...) and acne develops on your ass.
"Dude, I finally finished that game!" said C.
"Oh, yeah? How long did it take?" asked T.
"Just over 9 hours,...Oh Shit!" replied C.
"What?" asked T.
"Damn it!...I know I'll have zitass tomorrow!" said C.
by krystophoria February 18, 2014
9 Words related to zitass

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