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Stands for "Bitch With Kids"

A breed of female that is widely mistaken for a milf. The difference is: a BWK has children; a MILF has children too, but they're GROWN. a BWK has kids and a MILF has kids your age.
"She has a two-year-old? That doesn't make her a MILF! She's just a BWK!"
by deliberate December 21, 2005
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