Gross to the max
What do you call a person who places dirty diapers on top of dirty dishes? Well, there’s no specific word for it, so we’ll call these people inconsiderate jerks. Restaurant workers will deal with a lot of things, but placing a poopy diaper on top of dirty plates is beyond the pale.
The best anyone can hope for is the diaper to retain its shape. Worst-case, we’re looking at a diaper that explodes mid-service, contaminating everything from the waiting staff’s shirt and the kitchen. If that were to happen, the restaurant could sue you for every penny you’ve got. Be smart. Don’t do stupid things.