In Australia, a slang term for alimony, child support, etc. as a penalty for not being careful with your cock.
She divorced me, now I gotta pay cock tax.
by Expat Dave September 8, 2007
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A man who is paying child support or paying out their spouse after a separation.
He has been paying some serious cock tax since Catherine found out he was unfaithful .
by Spanishbride March 16, 2017
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