While playing the sport lacrosse, the act of having your stick hit out of your hands, which triggers every player on the field's yelling out "Yardsale!". It is called this because it is lying on the grass as if you were trying to sell it on your lawn.
Lacrosse Player 1: "Nick just had his stick hit out of his hands!"
Lacrosse Players 2, 3, 4, 5, 6, 7, and 8: "Yardsale!"
Prices shown in USD.