Since the Moody Foodie always wears a disguise, Bob's family tries to work out which of their customers he could be until a man dressed as a Hasidic Jew comes in and wipes his hands with a blue handkerchief, his "tell."
Unfortunately, the family make fools of themselves, culminating in Bob forgetting what the Moody Foodie's order was, and Gene accidentally setting the grill on fire.
After paying the deliveryman $48 plus the DVD edition of Tin Cup to forget about what happened, they set the Moody Foodie and the deliveryman free, but not until one of the restaurateurs gives the Moody Foodie a wet willy (in a parody of the ear-cutting scene from Reservoir Dogs).
A flashback reveals that, after everyone left, the Moody Foodie actually intended to call the cops, but after he tried the burger, he enjoyed it so much he decided not to press charges.
Club gave the episode an A, saying "One of the reasons “Moody Foodie” works so well is that each of its situations allows the characters to behave in a different, amusing fashion.