Leaving a Light On An elderly man visits the doctor for a checkup. "Mr. Smith, youâre in great shape," says the doctor afterward. "How do you do it?" "Well," says Mr. Smith, "I donât drink, I donât smoke, and the good Lord looks out for me. For weeks now, every time I go to the bathroom in the middle of the night, he turns the light on for me." Concerned, the doctor finds Mrs. Smith in the waiting room and tells her what her husband said. "I donât think thatâs anything to worry about," she says. "And on the bright side, it does explain whoâs been peeing in the fridge."