Any funds that are spent with the end goal being to see a woman's breasts. Can be used in both professional and amateur situations.
Ethan: So I took my girlfriend to the opera last night.
Tyler: Man, that's one steep titty tax.
by Webstersdickionary January 11, 2011
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Money an ex-spouse must pay in support to a woman he/she chose to marry just because she was sexually enticing.

Also see toochis tax
-Did you hear Dan and Barbara are getting divorced after only ten months?

-He's going to pay a hefty tittie tax to get out of that one.
by Jareau September 1, 2009
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