Definition- To drive down alleys in the city looking for useful things while acting devious and laughing mischievously.
Also see "Dumpster Diving"
After about 40 minutes of driving down alleys a friend and I were able to collect enough stuff for a "surprise yard sale".
Pictured here, we have a chair, a sink, toilet, a kids bed, some wallpaper, a bird bath, 2 kid pools, a TV, 2 computers, a lamp shade, a sled, a "big bat" and a bike.

In his words "We need stuff because we are going to arrange it all over his lawn and put signs up for a yard sale" so, I decided to help.