The bell is rung. A treat is dispensed to the dog. Then the son rings the bell without giving a treat. Before the father can explain that conditioning takes longer than a single exposure, the dog snatches the bag of kibbles. Son takes off in mad pursuit of dog.
Mother yells from kitchen to stop running in the house.
Father furtively turns on TV to check on developments at the car wash. The father yells for the animal to drop it, but the animal pretends it has forgotten how to speak English. The son finally tackles the stupid canine, knocking over a lamp in the process. How did the dog get my shoe, the father demands. I gave it to her, the son replies.