Work in the dark

A doctor of psychology was doing his normal morning rounds when he entered a
patient's room. He found Patient #1 sitting on the floor, pretending to saw a
piece of wood in half. Patient #2 was hanging from the ceiling, by his feet.


The doctor asked patient number 1 what he was doing. The patient replied,
"Can't you see I'm sawing this piece of wood in half?"


The doctor inquired of Patient #1 what Patient #2 was doing. Patient #1
replied, "Oh. He's my friend, but he's a little crazy. He thinks he's a light
bulb." The doctor looks up and notices Patient #2's face is going all red.


The doctor asks Patient #1, "If he's your friend, you should get him down from
there before he hurts himself?"


Patient #1 replies, "What? And work in the dark?"