When Uncle Joe is photographing Billie Jo and Betty Jo is turning the desk lamp on and off (to simulate a flash bulb going off), the lamp is not plugged in. Uncle Joe got the lamp from the basement, handed it to Betty Jo, and even pretends to plug it in. However, he does not even have the cord in hand. In fact, after he walks to the socket, the cord falls from the lamp and hangs loosely, making it obvious that the lamp is not plugged in.