Genius Is Mysterious
All members of Mensa have I.Q.s of at least 140.
At a recent Mensa convention, several members went to a nearby cafe and noticed the shaker with an "S" on top, for salt, contained pepper and their pepper shaker, with a "P" on top, was full of salt. How could they swap the contents of the bottles without spilling anything and using only the implements at hand? Clearly, here was a perfect Mensa challenge!
They presented ideas, debated them, and finally came up with what they felt was a brilliant solution involving a napkin, a straw, and an empty saucer.
They called the (short of brilliant) waitress over to dazzle her with their solution.
"Ma'am," they said, "we couldn't help but notice that the pepper shaker contains salt and the salt shaker contains..."
"Oh, sorry!" interrupted the waitress. "Here," and she unscrewed the caps of both bottles and switched them.