A Smart Cop

A guy runs a stop sign and gets pulled over by a policeman.

Cop says, "License and registration, please." Guy says, "What for?"

Cop says, "You didn't come to a complete stop at the stop sign." Guy says, "I slowed down, and no one was coming."

Cop says, "You still didn't come to a complete stop. License and registration, please." Guy says, "What's the difference?"

Cop says, "The difference is, you have to come to a complete stop. License and registration, PLEASE!" Guy says, "If you can show me the difference between slow down and stop, I'll give you my license and registration."

Cop says, "Exit your vehicle, sir." At this point, the cop takes out his nightstick and starts beating the ever-loving shit out of the guy and says:

"DO YOU WANT ME TO STOP OR JUST SLOW DOWN?"