Not particularly funny material to begin with. But Bancroft's approach to it is so ambiguous we're thoroughly confused. There's a key moment when it's clear that the three fatsos are about to break down. The movie has a quick edit to them stirring up a bowl of chocolate frosting. That could have cued us to laugh, if the edit had been to a closeup, say, of DeLuise licking the spoon. But what camera position does Bancroft choose for the cut? She puts her camera directly overhead in the kitchen, and shoots straight down!