I submit that, upon getting pulled over for a traffic violation, the ensuing discussion with the policeperson is exactly like playing rock paper scissors with a 7 year old boy.

You have three viable options:
Make an excuse. (Scissors) "I am trying to get to a SAD FUNERAL, and I am LATE oh NO."
Feign ignorance. (Paper) "Gee whiz, I could have sworn that this was a 65."
Cop to it. (Rock) "Sir, I just wasn't paying attention to my speed. And I am sorry to you, and to all your fellow members of the law enforcement community whom I have disgraced with my actions. And, if I may be so bold as to add: God bless America."

Depending on the situation and the personality of the officer in question, in my limited experience, one of these is the response to which they may be sympathetic.

But then there is the 7 year old boy factor! Remember when you were a kid, and you played rock paper scissors? And then some jerk threw out "nuclear bomb," accompanied by an outlandish mushroom cloud hand gesture? You can't fight that.
"BWOOSH HA HA NUCLEAR BOMB"
"You can't throw nuclear bomb!"
"I just did. Obviously nuclear bomb beats scissors."
"No no! My scissors cut the wires in your nuclear bomb, and it doesn't even go off!"
And everyone stares at you like you are a dick, because that is ridiculous, of course a nuclear bomb beats scissors.

This is a long way of saying that some cops are huge assholes.