A middle management executive has to take on some sport, by his doctor's orders, so he decides to play tennis.

After a couple of weeks his secretary asks him how he's doing.

"It's going fine", the manager says. "When I'm on the court and I see the ball speeding towards me my brain immediately says, 'To the corner! Back hand! To the net! Smash! Go back!'"

"Really? What happens then?" the secretary asks.

"Then my body says, 'Who? Me? Don't talk nonsense!'""