A fork of Rural Dictionary
Girls who act pure, then turn skank, cheat on boyfriends and act like bitches!
Keri turned NASTY in a hurry, what a nasty bitch!
The act of thrusting "Domino's Meatlovers Pizza" into a human vagina. Usually resulting in pizza remnants in said vagina, thus leading to maggot infestation of vaginal canal and surrounding genetilia.
Ben did you fuck Nikki last night?
No I did the nasty instead.
Catching your grandparents in an act of sexual intercourse
DUDE!! You saw your grandparents doing it?!?!? That's not nasty, thats the nasty gone nasty!
The type of pussy you see on old women you are forced to do gynaecological examinations on, but heaps don't want to.
JJB: I've been doing pelvic exams all day. That's some nasty nasty puss.
usually associated with STD's that a female has.
"Jack slept with Jill and caught a case of the nasties"
"That girl has got a bad case of the nasties"