To scrounge for coins, pens, or or other small objects typically found under the cushions and/or inside the gaps of a couch or chair.
JOHN: Hey Pete, you gotta extra fifty cents for a small pizza?
PETE: I think so, lemme just lift a cushion here and do a little couch mining for change.
PETE: I think so, lemme just lift a cushion here and do a little couch mining for change.
by Mr Tango Jones February 2, 2010