A burglar, needing money to pay his income taxes, decided to rob
the safe in a store.
On the safe door he was very pleased to find a note reading:
"Please don't use dynamite. The safe is not locked. Just turn the
knob."
He did so. Instantly a heavy sandbag fell on him, the entire
premises were floodlighted, and alarms started clanging.
As the police carried him out on a stretcher, he was heard moaning:
"My confidence in human nature has been rudely shaken."
