During a hectic night of mail processing at the post office, a number of letters fell off an elevated conveyor belt and scattered onto the floor. Before the area supervisor had a chance to pick them up, the facility manager, who had a reputation for being stern, came upon the scene.
“Why is this mail on the floor?” he demanded angrily.
Without hesitation the supervisor replied, “Gravity, sir.”
You know it’s going to be a bad day when your twin brother forgets your birthday.