15
Someone Who Does it with your ex.. you think shes ugly but shes really pretty but just a rebound girl
Christina-OHH he did it with Mcnasty
Meredith- Yup
by Greys anatomy Fan October 29, 2011
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16
A burger from a guy in the McDonalds parking lot that has a load of cum on the meat
What the Fuck, he gave me a McNasty
by Bakken March 03, 2009
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17
mcnastydrugs
by The Real Pab June 23, 2006
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18
1. An extremely ugly person who is stupid and annoys everyone around him. He usually asks dumb questions and pretends to have a girlfriend, who is usally ugly or underage.

2. Ugly boy who sleeps with blow up dolls.

3. Another name for Alex or Gomer.
Gomer's last name is McNasty.

Eeeww...McNasty asked Cristi out on a date? What about his girlfriend? I mean, blow up doll.

by Bankruptcy Bitch November 06, 2006
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19
McNastycollege
a brotherhood that throws retards in the trash can.
the mcnasties threw that retard in the trash.
by mule December 06, 2003
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20
McNastydrugs
a male who smokes pot for a living and transmits the "McNastizzle" disease.
McNasty wants on me, but he wouldn't be able to get it up because he is too stoned.
by Kellaur August 23, 2006
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21
A female that has taken disgust and grime to an extremity, a true whore at heart that reminds every man of something that can be purchased at mcdonalds; fat, sloppy, and down right disgusting. Generally, if you are indeed dealing with a true McNasty on your hands, chances are that she is so loose that a football can get inserted with zero difficulty.
Guy 1: Wow bro, every time I turn around that girl is hooking up with a new guy. I can't believe you got with her!

Guy 2: I know dude! Chances are I might have an STD...Im pissed.

Guy 1: Yeah dude I'd get checked out tomorrow, what a god damn McNasty
by President of Piffboro June 05, 2011
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