Four

A motorist was unknowingly caught in an automated speed trap that measured
his speed using radar and photographed his car.
He later received in the mail a ticket for $40 and a photo of his car.
Instead of payment, he sent the police department a photograph of $40.
Several days later, he received a letter from the police that contained
another picture, this time of handcuffs.
He immediately mailed in his $40.

Another sign
(though this guy might be onto something worth thinking about)!

Five

Guy walked into a little corner store with a shotgun and demanded all the
cash from the cash drawer. After the cashier put the cash in a bag, the
robber saw a bottle of scotch that he wanted behind the counter on the
shelf. He told the cashier to put it in the bag as well, but the cashier
refused and said, "Because I don't believe you are over 21." The robber
said he was, but the clerk still refused to give it to him because he
didn't believe him. At this point the robber took his driver's license out
of his wallet and gave it to the clerk. The clerk looked it over, and
agreed that the man was in fact over 21 and he put the scotch in the bag.
The robber then ran from the store with his loot. The cashier promptly
called the police and gave the name and address of the robber that he got
off the license. They arrested the robber two hours later.

Remind me to have more signs printed up.

Six

A pair of Michigan robbers entered a record shop nervously waving
revolvers. The first one shouted, "Nobody move!" When his partner moved, the startled first bandit shot him.

This guy doesn't need a sign, he probably figured it out himself.

Seven

Arkansas: Seems this guy wanted some beer pretty badly. He decided that
he'd just throw a cinder block through a liquor store window, grab some booze, and run.
So he lifted the cinder block and heaved it over his head at the window.
The cinder block bounced back and hit the would-be thief on the head,
knocking him unconscious. Seems the liquor store window was made of
Plexi-Glass. The whole event was caught on videotape. Oh, that smarts.
Give him his sign!

Eight

Ann Arbor: The Ann Arbor News crime column reported that a man walked
into a Burger King in Ypsilanti, Michigan at 12:50 A.M., flashed a gun and demanded cash.
The clerk turned him down because he said he couldn't open the cash
register without a food order. When the man ordered onion rings, the clerk
said they weren't available for breakfast.
The man, frustrated, walked away.

Please note that these people are allowed to vote