Top Definition
when two or more people fart in a confined space (ie. room, car, elevator...) after the first person comments on the stench more than one person accepts responsibility.
as i was playing a game with my friend the other day I let out a "SBD" (silent but deadly), and when i said sorry he laughed and i realized it was a colonaboration!
by mamalekabubuday March 01, 2013
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