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

Any large person who refuses to engage in daily personal hygiene, often smelling of rancid garbage and/or rotten cheeseburgers with onions on a hot day. Also the same person who refuses to courtesy flush who may have had a gastro sleeve whose stool is unbearable to the point of choking and/or vomiting.
by Unc Vinny September 27, 2019

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

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

by Randall1978 March 13, 2015

by bullfrog_jwa December 11, 2012

Josh: I saw Alec walk out of the Library crying, is he okay?
Connor: Yeah he was probably doing the Sad Nasty with his girlfriend again.
Connor: Yeah he was probably doing the Sad Nasty with his girlfriend again.
by Centurion_Code May 21, 2018
