when your having sex and air somehow gets trapped between you and your partners chest area, causing a farting sound. thus, fart knockers.
what the hell was that noise?

don't be alarmed, those were just my fart knockers
by alci hall November 18, 2009
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vb. A prank that involves knocking on said door, then farting.
Jimmy: Hey dude I just pulled a fart knocker!

Billy: You are a dumbass.
by Jon Bone Jovi October 11, 2010
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When you screw a girl in the ass and she has a fart waiting so you are knocking on her fart.
you did her in the ass

ya man it was awesome

w/e your a fart knocker.
by Ryan Daigle April 28, 2008
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Someone told me it was someone who farts so hard that they knock things over. I don't think any of us really know what it means.
(both kevin and John don't know what a fart knocker is)
Kevin: You're a fart knocker
John: What's a fart knocker?
Kevin: You don't know what a fart knocker is?!
John:...oh...yeah, of course I know what a fart knocker is.
by moooose February 22, 2007
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1.)someone who doesnt leave you alone and annoys you.
2.)something you say when you hurt yourself, or forgot something.
1.)"GOD! You fart knocker! Leave me alone!"
2.)"Ah fart knocker!"
by cody's girl July 26, 2005
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1. a trained doctor who knocks the farts right out of you.
2. a person/thing who knocks the farts out of you with a quick blow to the stomach
3. a dumbass who thinks he's cool but he's trip'n
1. Dr. Fart knocker used a Fart knocking device to knock the farts out of little Tony.
2. Rover knocked the farts out of his owner when he wanted to play "fetch"
3. Elmo's gonna knock the farts out of you!
by J. Mayon June 14, 2006
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Basically a gay person who likes to prance about , making sure you know his gay . Used in beavis and butthead
Beavis your touching his butt you twirling fart knocker
by Markymark996 January 1, 2020
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