An upholstered
couch, settee, or other form of seating, which has been saturated with flatulence to the
point that its foam interior permanently reeks and may
well have acquired a brownish tint.
I don't mind watching the football
game at Joe's house, but there's no way I'm crashing on that fart sofa after everyone's had chili
dogs.
On "My Strange Addiction", I saw a
woman who eats bits of foam cushion from used couches — can you believe she actually snacks on fart sofa?