A store manager watches from a distance as a salesperson argues with a customer. After a few minutes, the customer storms out of the store.

“I saw what just happened,” the manager says, “and I guess you’ve forgotten my motto of ‘the customer is always right.’”

“I know,” the salesperson says, “but . . .”

“No buts,” says the manager. “The customer is always right.”

“Fine,” responds the salesperson.

“What were you two arguing about?” the manager asks.

The salesperson answers, “He called you an idiot.”