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1. The action of a MILF becoming unattractive due to menopause.

2. The action of a MILF transforming into a GILF with use of a ThunderStone at level 30.
Stoned Guy "I wonder if Peters mom is still a MILF?"

Other Guy "Dude, MILFS don't just UNMILFITIZE that quick. Read a damn book, its common knowledge bro."
by James315 September 28, 2012
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