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Yeah so basically it means raunchy dirty sex. WHATUP!
After i did the dirty nasty with heather, i skeeted all up on her face.

That bitch is such a ho, she has done the dirty nasty with like every motherfuckin playa.

by can't remember December 23, 2006
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Grossly disgcusting. Somthing so Sick and wrong you would never want to lick it, rub it,smell it, or even touch it...
Mattew get your dirty nasty feet off my bed.
by Ern August 31, 2003
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