ducks and drakes

noun

1. Also duck and drake. a pastime in which flat stones or shells are thrown across water so as to skip over the surface several times before sinking.

noun (functioning as singular)

1. a game in which a flat stone is bounced across the surface of water
2. make ducks and drakes of, play ducks and drakes with or play at ducks and drakes with to use recklessly; squander or waste