Go 50 mph in a 40 mph zone

A state trooper pulled a car over and told the man driving
that he was going 50 mph in a 40 mph zone.
"I was only going 40!" the driver protested.
"Not according to my radar," the trooper said.
"Yes, I was!" the man shouted back.
"No you weren't!" the trooper said.
With that, the man's wife leaned toward the window and said,
'Officer, I should warn you not to argue with my husband when
he's been drinking."