King Arthur Movie Tristan

A blonde woman was speeding down the road in her little red sports car and was pulled over by a woman police officer who was also a blonde.
The policewoman asked to see the blonde's driver's license.
She dug through her purse and got progressively more agitated.
"What does it look like?" she finally asked.
The policewoman relied, "It's square and it has your picture on it."
The driver finally found a square mirror in her purse, looked at it and handed it to the policewoman.
"Here it is", she said.
The blond officer looked at the mirror, then handed it back saying,
"Okay, you can go. I didn't realize you were a cop."