An enlarged muffler-tip used by people who think that they will be more cool if they make their peice of shit 1998 honda civic DX sound like it is taking a shit everytime they lay on the gas.
Considered the opposite of Pussy Tubes
"Fart Cannons are fucking annoying"
"Nice Fart cannon, does it make your peice of shit 1998 honda civic DX do anything special other than making it sound like it is taking a shit everytime you lay on the gas?"
"Fart cannons are the opposite of pussy tubes