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This special day happens on the 2nd Sunday in May. It usually coincides with Mother's Day. It is mostly celebrated by male teens and old, balding men.
Hey dude, it's milf day today! What did you get for Patrick's mom?
by Jay-Zed May 09, 2008
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2
Often used instead of the word "birthday". Really common in German speaking countries, primarily to wish a good looking, mature women a "Happy Birthday".
Happy milfday sweetheart!
by fefefe September 28, 2010
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