Pilot sex life
Conducting a study of sexual behaviour, a researcher stops an airline pilot. "Can you tell me when you last made love?" she asks.
"Nineteen fifty-nine," he answers.
Having heard a lot about the reputation of airline pilots, the researcher is taken aback. "That's an awfully long time!" she says.
"I suppose," says the pilot, glancing at his watch. "But it's only twenty-one fifteen now."