This is my friend's stupid colleague story:
She: "Hey, could i have a blank piece of paper?"
He, ever the environmentalist, hands her a piece of paper that is printed on one side, and blank on the other.
She: Takes that piece of blank-on-one-side paper, and proceeds to the photocopy machine, to make a double sided copy of the blank side.
She then returns the one-side-blank paper to my friend, and explained to him how she needed her paper to be blank on both sides.