When you are fingering a chick and she takes your fingers out of her vagina and sticks it in her mouth and licks the juice off.
After Homecoming Drew goes to Alex's house to get some play. Alex preforms the Nasty Nora and gags, scaring Drew.
by Das Man July 2, 2009

The act of fingering a girl on all fours with both hands, one from the front and one from the back to have your arms form a letter "M".
Someone put up a awesome shot of Sally getting a McArch Nasty in the Starbucks bathroom online. She's a whore.
by Jiggamanflossin November 21, 2010

The kid at the school got the nickname Slim Nasty in basketball class because he was a skinny baller, but after 3 years he still had the nickname.
Slim nasty
Slim nasty
by SlimN June 7, 2013

by Iwantokillmyself April 19, 2016

When you cum in your womans pussy then put your fingers in her cum flooded snatch and wipe them under her nose. Also called "The Armor All" treatment.
by SlickStickRick May 8, 2014

Aka, the person who messes up your stuff and/or rolls clay to you. A common name for a Nasty Rat is Avery and Carson.
by Miss Ma'am Sir February 10, 2020

A nasty virgil is a flummoxed little person who's balls are bigger than their penis. This size difference causes the nasty virgil to often pee on his own ball sack, thus making him smell like urine. This smell merits calling him nasty virgil
by Wizzard Karl 2 October 10, 2014
