And the man at the counter says to the photon, "Hello, sir. Could I get your luggage?"
And the photon says to the man, "No thank you. I'm travelling light" 8D
Pascal, Einstein, and Newton are hanging out one day and decide to play hide-and-seek.
Einstein goes first, while Pascal runs off. Newton simply stands there, takes out a piece of chalk, and draws a mid-sized square around himself.
Einstein finishes counting and turns around, "Newton?? I found you."
"Ah!" Newton replies, "You found one Newton per square metre! You found Pascal."