(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.
In sex, when a woman is made to sit on her hands and knees in order to be penetrated at both ends by two men, making her appear as if she is impaled on a spit rod.