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To sit on a chair (usually at school) and your balls roll under your ass causing you to sit on them sacking yourself
Guy:1 ow fuck!
Guy 2: what'd you do?
Guy 1:say down hard on my balls!
Guy 2:ouch do you just pop your sack.
Guy1:Ya it hurts like hell.
by ERJO28 May 22, 2014
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