The Bad Waitress terrorizes customers. She chain smokes cigarettes as she jots down food orders. She penciled Groucho Marx eyebrows above her drooping eyelids and a beauty mark onto her face where a dimple would be -- if she ever smiled. Her smeared lipstick can't conceal sneering lips. Her hairstyle is collapsing crazily around her face.

Chattanooga-based Continental Films deployed the Bad Waitress in films and slideshows during the 1950s and early 1960s to teach Krystal employees how to give excellent customer service. (Yes, Krystal once had waitresses.)

The same actress returns as a nonsmoking Good Waitress wearing a spotless uniform. Her hair is swept into a neat bouffant, her eyebrows perfectly plucked and her makeup is modest. She even smiles demurely.