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1 - The union of a human ass and a toilet, which upon flatulence produces a low-pitched sound (bass) often heard in the presents of a random jackass having a telephone conversation whilst shitting.
Over phone: What was that sound? Was it an Asswoofer? Dude are you talking to me on the shitter, in a public restroom? You ass!

mumbling Asswoofer: Hehehehe.
by Codeman_333 May 14, 2014
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