1.)A person who is trying to be mad in a situation who really isn't mad.
The person may:
-Throw a tantrum. Ex: Crossing one's arms and kicking one leg about.
- Make a mean face. Ex: Frowning or Shifty-eyes.
- Make angry sound effects, usually done when a mean face is performed. Ex: Quick grunting, or low growling.
- Giving someone an obvious silent treatment. Ex: When you say 'Omg, where did you go?' Looking in the distance when the person is standing in front of you.

People become a Sassy McNasty when:
- They are being a brat and not getting their way.
- They lose in playful competion such as board games or trivia.
- They run out of comebacks.

Words can be added as a 'suffix' to more personalize the title, but they don't change the definition.
'You throw the game board at me because I beat you at monopoly? Have fun cleaning up the houses and hotels scattered across the room you Sassy Mcnasty.'

If you were to make fun of someones pants and they were acting like a Sassy McNasty because they didn't have a comeback, you could call them a Sassy McNasty Pants.

by Xybergate April 06, 2009
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A girl that, while she is sexy and you want to bang, is presumed to be a dirty whore.
Mikey: Holy Shvt! Look at that girl across the bar. I would do things to that girl that are illegal in 48 states!
Tim: You can't be serious dude? I hear that cum dumpster had a train ran on her by 4 guys and gave them all the clap.
Mikey: Good looking out, she's a total Skankalicious McNasty.
by dudubudr March 06, 2011
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The title of Grand Master in Tiger Woods 09....
There can only be one Nasty McNasty and he is Floyd L. McIntyre
by thebaddestmanontheplanet131 January 25, 2009
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Famous porn star from Santa Clara who pioneered the genre of Trailer Park Porn
Cinnamon McNasty is one of the greatest role models in America of the 21st century
by nuttyDave12 September 27, 2011
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The boss of bitches, thuggest of all, and usually don't fuck with the bullshit. Real name is usually Erin.
Step aside, Thug McNasty is in the room.
by THUG MCNASTY February 11, 2014
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A DUMB THICCCCC DEER AND I MEAN IT MAKES YOU GO "DAMN THATS A SHAG MCNASTY"
SO INTHE WOOD YESTERDAY WE SEEN A 4. BUT IN THE WAS THAT GOT DAMN SHAG MCNASTY.
by D-WOP MCNASTY January 29, 2020
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