Shitloading

(Verb) When a vending machine attendant or shelf stocker puts the product in backwards, upside-down, leaves the packages wrinkled, ignores "sell-by" dates, etc.; basically stocks the machine/shelf with no regard to presentation, functionality or salability.

I just double-checked Jughead's work.....He totally shitloaded the snack machine.

I'm writing Archie up for shitloading the beverage aisle.