Top Definition
1.masturbation
2.jacking off
my brother was whacking it yesterday
by kitty+sis February 24, 2004

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to masturbate aggressively without stopping until you are finished.
where is tom?
i think he's whacking it in the bathroom.
by Fergieferg July 12, 2009

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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