Top definition
The shelf life of a Milf; How long a Milf will remain a Milf, given unchanging environmental conditions.
1) Dude, you're mom's hot. I would have thought that by her age, she'd be a crone, but she's still got about a 3 year milf-life.

2)- Dag, that chick's kickin'.
- What are you talkion' about? She exceeded her milf-life 15 pounds ago.
by M Digga August 14, 2006
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