The act of farting loudly whilst sitting on the toilet
I thought I had to shit, but I just sat there playing ass tuba.
by D-McNasty December 30, 2011
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The expelling of gas resulting in a low tone like that made by a tuba. Akin to a bugle fart but a much lower tone is produced when really pushing hard in order to hammer that sucker out.
My coworker just let out an enormous booming tuba fart that literally shook my desk.
by thejimparker November 28, 2016
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The most revolting instrument of all. Nobody wants to know what a note under 57 ledger lines sounds like. Tuba players generally are fat, ugly, cheek-puffing slobs. Stay away from tubas and their players.
"*FART*" - sound of a tuba

by Max12234 December 27, 2007
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A gaping vagina that makes deep bass-like noises.
How was sex with that chick last night?
Great, up until I heard her Vaginal Tuba.
by Brian & Nick April 19, 2009
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The objectification of the female reproductive system after a long and vigorous amount of time fornicating, where the large amount of air that passes between the so-called "Slip-and-Slide," and exits into the atmosphere; usually followed by an akward silence between the two parties.
Steve, "I can't freaking believe it, I totally just got Christine to play her tuba twat!"
by bendover@sexperttire April 12, 2009
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A sex toy in the shape of an ass.
The truck driver never goes on long trips without his rubber tuba.
by Dick Gosinya February 13, 2015
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