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Occurs when a man hits something with his testicles. This could be on purpose or an accident. Primarily occurs when he strikes a woman in the face with his testicles on purpose. Also a derogatory remark when used as a threat.
I'm gonna Bieber Slap you right in the face!

Owwwww! I just Bieber Slapped myself on that chair

Last night I Bieber Slapped my girl...
by Tucker Merrick September 10, 2010
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