Top Definition
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
to get beat down and embarassed in the worst way possible
France got Bieber slapped at the 2010 world cup.
by Blackmaninawhitesuit June 22, 2010
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