Two Patients

A psychiatrist patient climbed to the top of the double-storey hospital. Another patient, who was on the ground asked, "How did you get up there?"

"By a ladder you fool!" the patient on the top building answered.

Then the patient on the ground thought for a second and said, "Why don't you piss let me see if your pee will get to the ground!"

The other man responded, "You think I'm crazy?! You want me to pee so that you can pull me down!"