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While a man is receiving oral sex, it is the act of bruising a partner's chin as a result of violent, aggressive oral sex, whereby the testicles slap against the chin with such force, causing the bruising or tenderness of the partner's chin.
His ballbag slapping hard against his girlfriend's chin, Frank gave Sally hammerballs.
by Beer Whore September 27, 2010
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An extremely ignorant person. Someone who has no clue what is going on around them.
That Chux is such a hammerball. He doesnt know whats going on.
by mendel December 09, 2003
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