1 definition by FurBurger69

1- a really big stupid muffler that is fitted on cars to make them loud even though they have a four cylinder engine that puts out about 100 hp

2- a rocket launcher or grenade launcher.
whoah! look at that geo metro with that huge boom tube stickin off the ass of it!

i saw Safetman coming around the corner so i busted out by boom tube and blasted that sack of shit
by FurBurger69 May 26, 2005
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