Dirty Flanny 

The act of filling a 1 gallon milk jug with cow semen and an irishman's piss, then giving it to a person you dislike to consume.

Paulie thought he was doing the one gallon challenge with milk, but little did he know that Wally pulled a Dirty Flanny.

Dirty Flanny by Flanny June 26, 2012

dirty fanny

A woman who has an infested,unattractive,smelly vagina

Hannah says "I've got an itch"
pedro replies " You've got a dirty fanny then girl"

dirty fanny by culluchi April 29, 2014

Dirty Old Fanny 

Something that Bulma from Dragon Ball has.

Bulma: If you give me the dragon ball I'll give you a little peak.
Goku: What do I care about your dirty old fanny?
Bulma: IT'S NOT DIRTY YOU RUDE LITTLE BOY!!!!!!

Dirty Old Fanny by FaggotKiller2001 April 3, 2022