I Saw The Light

The psychiatrist was walking through the institution, his first day in this new facility. He came across two patients, one of them hanging from a roof beam in the ceiling while the second sawed through an invisible board with an imaginary saw.

"What is your friend hanging from the ceiling for?" the doctor asked the delusional carpenter.

"Oh, he thinks he's a light bulb," the patient replied.

"Don't you think you should help him down?" the doctor continued. "He might get hurt."

"What?" the patient replied. "And I suppose I should work in the dark?"