fart knocker 

Originally slang for male homosexual, but the phrase has been used so widely (mainly by second-graders)that it now can mean almost anything.

1. I think Devon must be a fart-knocker. 2. Hey, fart-knocker, your cheating!

fart knocker by Ben Carmitchel, IL April 25, 2003

fart knocker 

Reference to anal sex, basically a variant of "fudge packer." Usage hijacked and generalized by the Beavis and Butthead show in the 90s.

Those fart knockers are outside the gay nightclub again having a smoke.

fart knocker by Janet90232 October 24, 2007

fart knocker 

n. someone who is a loser or a moron; used as an insult by Second Graders

SHUT UP! You're a fart knocker!

fart knocker by Saint Shaggy November 5, 2002

fart knocker 

One who farts on his neighbor's doorstep, knocks and then runs away leaving said neighbor in smelly ass cloud.

Goddamnit....That Fart Knocker just busted ass on my doorstep again.

fart knocker by Dr. Evil December 3, 2003

Fart knocker 

A person who places their bare ass against a door and farts rather than knocking with their knuckles.

I came home and founds brown skids on my door thanks to that fart knocker.

Fart knocker by Pseudo Menudo July 8, 2017

fart knocker 

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.

Bruce: Knock knock.
Bob: Who's there.
Bruce: Fart.
Bob: Fart who?
Bruce: Fart Knocker.
Bob: Fuck you.

fart knocker by camp lickalotta March 13, 2008

fart knocker 

Someone who gives it up the ass

fart knocker by Minges and all! April 15, 2003