A Police officer pulls over a speeding car. The Officer says, "I clocked you at 80 mph. sir."
The driver says, "But officer, I had it on cruise control at 60, perhaps your radar needs calibrating."
Not looking up from her knitting the wife says sweetly, "Now don't be silly dear, you know that this car doesn't have cruise control."
As the officer writes out the ticket, the driver looks over at his wife and growls, "Can't you keep your mouth shut for once?"
The wife smiles demurely and says, "You should be thankful your radar detector went off when it did."