A disproportionately large muffler or exhaust pipe, mounted on an automobile with a small displacement engine. Named for the flatulence like sound the vehicle's exhaust makes.
A six inch fart cannon attached to a 1 inch tailpipe? Don't tell me. You've seen The Fast and the Furious at least once, right?
by 1Spectre4U August 12, 2003
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A huge muffler tip stuck onto a tiny little engine. Results in a "farting" noise and makes the car sound like an angry weed-wacker.
I hope that guy with the fart cannon reailizes his car sounds like it has asthma.
by MikeNJ December 21, 2005
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A huge ass muffler attached to small engines.
Honda Civic with a 10 inch fart cannon that makes very noisy pathetic sounds.
by mmx January 17, 2004
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a large "N-1 style" muffler usually attached to import cars. manufacturers usually claim it adds power to cars, however it may adversely affect performance of a car due to lack of necesary backpressure in a cars exhaust. The result of these mufflers is a high decible exhaust that makes the car have less power at low rpms. usually purchased by people who think their car is good when it is actually a pos. Fart canons are a major status symbol in the world of ricers, the louder your 93 horsepower import.... the cooler.
wow look at the fart cannon on that civic.... what a poser
by BATWINGS_07 July 31, 2006
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a very large exhaust pipe attached to a car that was built for a much smaller pipe, named because of the sound it makes, which is similar to when you fart through a very hight quality microphone

used by chavs (uk) and ricers (us)
me: take off that freaking fart cannon its gonna wake up the entire street!

chav: bu' it' 'ard innit ya goffic nob
by EEwisewolf May 29, 2008
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An enlarged exhaust pipe that people sometimes add to their cars. The result is a fart-like sound from the engine. Some fart cans are just for show -- they only make noise, and don't make the car any faster.

This car modification is usually done to Asian import cars, but not always.
See related: Mitsubishi, Toyota, Honda, fart can
by Ryan Thompson January 16, 2004
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The act of farting mid-shit and literally shooting it out of your ass.
I farted mid-shit and it shot in the toilet. My butt is a fart cannon.

Alex has a powerful fart cannon. He broke the toilet last Tuesday.
by fartsniffer24 October 16, 2014
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