Statistics are like bikinis.
What they reveal is suggestive, but what they conceal is vital.
Two chemists walk into a bar. The first says, "Can I have a glass of H2O?" The second chemist says, "Can I have a glass of water, too?" The first chemist breaks down in tears — his assassination attempt has failed.
(He didn't say H2O2)
What do you get when you cross a mosquito with a rock climber?
Nothing. You can cross a scalar and a vector.