The officer asks the lawyer "Do you know why I pulled you over?"
"I haven't the foggiest idea," said the lawyer.
The officer replied, "You didn't make a full stop at the stop sign back there. You only slowed down."
The lawyer thinks for a few seconds then says, "If you can prove to me the difference between stopping and slowing down, I'll take full responsibility. Otherwise, you let me off with a warning.
The officer ponders it shortly before nodding his head. "Sounds fair. Can you step out of the car please?"
Just as the lawyer steps out and shuts the car door, the officer pulls out his baton and starts beating the lawyer.
After a few swings, the officer says, "Now, would you like me to stop or slow down?"