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1. Unprotected sex with another person

2. When someone does something sick or gross and you "match" the act with one equally as sick or gross
1.Dude, I took this girl home and we totally matched nasties
2.Hey, how about I fart. Then we all match nasties
by 1bigfloppydong August 30, 2010
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Aug 9 Word of the Day
Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.
I think Alicia may have some real sleepers.
by KABT October 26, 2007
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