It usually keeps you safer on the road.
A police officer in Rondonopolis, Brazil was on his way to work.
He was pulling his car out of the garage when a man pulled up on a motorcycle and told him this was a robbery.
The officer pulled his gun and shot the potential robber several times in the stomach.
Reports don't say when the officer realized it, but the "robber", whose head and face were obscured by a motorcycle helmet, was actually the officer's friend, who was pulling a prank.
The policeman quickly brought him to a hospital, where his friend died.
Brazil police officer simulates holdup as a joke is shot dead by friend, The Washington Post>>