When someone accumulates a load of trash over a long period of time, or gets evicted, their trash gets put on the curb for trash pickup. The temptation of wealth and riches draws Mexicans with grocery store carts to dig through every last bit.
They threw several decades of crap from that old attic and put it curbside. Now we have a Mexican Yardsale out front.
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!"
In contact sports when a player is hit, checked or tackled by an opponent so hard the equipment from the player being hit fall off the player and spread all over the playing surface. Make the playing surface look like the front yard at a Garage or yard sale covered in used sporting equipment. The opposition will then yell "Yardsale" to complete the act.
"Did you see me yardsale that guy last quarter. His helmet landed 10 yards away."