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When you suffocate someone using your nutsack. (Picture the way a small child looks when they put a plastic bag over their head and breath in.)
If that bitch/ screaming child doesn't shut up, I'm gonna give her/it sack mouth.
by Snake Mittens January 30, 2010
a person that constantly has sack (scrotum) up close to their mouth
Owen, Mike D, Mike K
by Billy Madison April 01, 2005