Science!

This made me laugh far harder than it should have:

Heisenberg is driving down the highway one day when he sees a cop pull up behind him, siren blaring and lights flashing. So Heisenberg pulls over and the cop walks up to his car and looks over the top of his shades at him, "Sir, do you have any idea how fast you were going?"

"No officer, but I do know precisely where I am."
~Joke courtesy of the internets.