A girl who is or acts like a slut.
"Did you see that girl dancing last nite?"
"Yeah, she was such a nail bag!"
by N Leach January 20, 2008
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A very saggy pair of woman's breasts.

Mate, she had tits like a slate layers nail bag.
by lennylightweight March 29, 2006
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Woman who's face is well and truly weathered.
Don't fancy yours much John, She's got a face like a roof tilers nail bag.
by iamamanufan January 11, 2011
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