My friend is the manager at a chain grocery store much like Sav-A-Lot or Price Chopper, pretty low end, full of poor customers, and located in a bad part of town. One night they actually found a customer flopping around on the floor of the employee bathroom smoking crack with a crack pipe made of shit he had stolen and scavenged from within the store - a brass spray nozzle, a piece of plumbing tubing, etc.