To a guy his wheel of the car was deflated right in front of a hospital for the Insane. He starts to repair the malfunction, but after removing the deflated wheel he accidentally kicks the screws and they fall into the channel.
A madman was sitting on the fence of the hospital and looking at the man who struggled to pull the screws out of the channel. After a quarter of an hour the madman asks him:
“Man, can you get to the nearest service with wheels in just three screws ?”
“Yes, of course ! They would be enough.”
“Then why don’t you pull out a screw from the other wheels to put them on this wheel ?”
“But you are smart !”, the driver says. “Why do they keep you locked up at the madhouse ?”
“Well, I’m crazy, not stupid !”