A guy is driving along, and comes to a stop sign.
He reduces his speed to almost zero, then resumes driving.
A cop pulls him over for blowing a stop sign.
The resulting incident goes something like this:

"But officer, I slowed down!"
"Yes, but you didn't stop."
"But I slowed down!"
"You have to stop."
After a few more interactions like this, the cop is frustrated that the guy just won't understand, and drags the guy out of the car, and starts hitting him with his nightstick and says,
"Do you want me to stop or just slow down?"

 

Oh man thats a good one!