From a profile of Johnny Mac.
“The tennis commentator Mary Carillo, a fellow New York native and his mixed doubles partner for their win at the French Open in 1977, recalled an 18-year-old McEnroe losing his temper with a waiter at a Paris cafe that spring. McEnroe spent several minutes yelling ‘omelet du fromage, which was the only French he spoke, at a waiter who ignored him. The waiter finally wandered over and quietly, but dismissively told McEnroe, ‘The omelet is closed.’
‘To this day when we’re arguing about something and I’m done with it, I just say, ‘the omelet is closed,’ said Carillo. . . .”