Reference to anal sex, basically a variant of "fudge packer."  Usage hijacked and generalized by the Beavis and Butthead show in the 90s.
by Janet90232 October 24, 2007
 Get the fart knockermug.
Get the fart knockermug. by Saint Shaggy November 5, 2002
 Get the fart knockermug.
Get the fart knockermug. A simple derogatory term used to make fun of someone.
It's use does not specify what the person has done, simply that you are letting them know your are making fun of them
Origin is from the cartoon series " Beavis and Butthead"
It's use does not specify what the person has done, simply that you are letting them know your are making fun of them
Origin is from the cartoon series " Beavis and Butthead"
by al cohen April 26, 2006
 Get the fart+knockermug.
Get the fart+knockermug. One who farts on his neighbor's doorstep, knocks and then runs away leaving said neighbor in smelly ass cloud.
by Dr. Evil December 3, 2003
 Get the fart knockermug.
Get the fart knockermug. A person who places their bare ass against a door and farts rather than knocking with their knuckles.
by Pseudo Menudo July 8, 2017
 Get the Fart knockermug.
Get the Fart knockermug. n. 1. one who knocks farts 
2. one who has the ability to penetrate gas with solid
3. one who can walk through a green cloud with no ill
effects
4. one who thinks he/she has discovered a door, only to
realize later that it was a fart
5. a brown, smelly ghost
6. one who uses: lol, ur, prolly, teh, etc.
2. one who has the ability to penetrate gas with solid
3. one who can walk through a green cloud with no ill
effects
4. one who thinks he/she has discovered a door, only to
realize later that it was a fart
5. a brown, smelly ghost
6. one who uses: lol, ur, prolly, teh, etc.
Bruce: Knock knock.
Bob: Who's there.
Bruce: Fart.
Bob: Fart who?
Bruce: Fart Knocker.
Bob: Fuck you.
Bob: Who's there.
Bruce: Fart.
Bob: Fart who?
Bruce: Fart Knocker.
Bob: Fuck you.
by camp lickalotta March 13, 2008
 Get the fart knockermug.
Get the fart knockermug. 