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.
A transplanted Rural Girl desperately trying to acclimate to the big city. She may look and act the part, but deep down she still has "Country Crock" written all over her.