Top definition
A really nasty, smelly fart that lingers in the air. If released into a couch, or any form of a pillow, a billy rueban will stay there for hours until someone releases it by hitting the affected area. Usually resulting in a nastier, stale smelling fart.
When Tom released a billy rueban we left the area only to come back to a nasty smell that was unbearable.
by Vince Fermino November 10, 2007
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