Spitting on the inside of your mask to keep it from fogging was common practice when going snorkelling in the Bahamas. Or at least it was years ago.
"Sometimes the point of doing something is not to find the "best" way of doing it, but to discover the most fun" - Gever Tulley
"Use peaceful means where they are appropriate; but where they are not appropriate, do not hesitate to resort to more forceful" Thupten Gyatso (the Dalai Lama, 1932)
"It is not the will to win that matters - everyone has that. It's the will to prepare to win that matters" Coach Paul 'Bear' Bryant.
"The ink of scholars is more precious than the blood of martyrs" - Muhammed