enjoy the soup

Mrs. Chainsaw stood in line at the Rite-Aid waiting to purchase a greeting card. What's your card say?, asked someone. "I'm very nervous right now," answered Mrs. Chainsaw, to no one in particular. Is it a Christmas card?, asked another. Maybe it's a happy retirement card, said another. "I'm too nervous to eat soup," muttered Mrs. Chainsaw. Is it an enjoy the soup card?, mused a stranger in a red and black wool flannel shirt. Oh yes, that must be it, everyone agreed. Enjoy the soup, said everyone in unison.