søg på et hvilket som helst ord, for eksempel kappa:
 
8.
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
af Greys anatomy Fan 29. oktober 2011
 
9.
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
af Bakken 3. marts 2009
 
10.
a reference to a human being that stuffs their fat into a pants size way too small so that their hairy ass crack hangs out.
also a word to describe something very discusting, or to complain.
'Escuse me sir, I'd like to speak with the McManager about these MCNASTY french fries. I'm very unmcsatisfied with their utter mcnastiness.'

'WHOA DUDE! look at that heffer's ass! it's so effin mcnasty. it's a full moon tonight, ehh?'
af the mcmanager 7. november 2008
 
11.
-noun, overweight, ugly, disgusting McDonald's worker who you fuck; someone who nobody but YOU would have sex with
1. Dude, the drive-through lady is disgusting... That's a McNasty!

His first time was a McNasty, sucks to be him!
af MBA-BJS 21. december 2009
 
12.
a nasty person that works at mcdonalds & god knows what they put in your food.
I went to mcdonalds last night & McNasty was working the window.
af JeffReedsGirlx3 30. januar 2009
 
13.
1.something really gross or completely disgusting,
dood:i went to the bathroom and someone had sharted all over the seat, i don't think he made it!

Dood2:AWW bro! that is so McNasty
af k_u 15. august 2008
 
14.
A horrible and disgusting form of diarrea that fills the whole toilet with its volume and the whole house with its odor; is usually due to consumption of fast food or drinking lots of alcohol the night before.
"Dude, why are you clutching your stomach with one hand and covering your ass with the other?"

"Fuck, I knew I shouldn't have mixed rum with pabst with gin with taco bell with a big mac last night, now I have to take the biggest McNasty known to man."
af Danny Sin 15. april 2007