ice in the desert
My early flight training in the states, had done all the ground school previously, and learnt that ice was bad, so to my amazement turned up at the airport in Scottsdale to find ice on the warrior, so being a very switched on sort of guy I searched high and low for de-icer, in all the tubs were the screen cleaner and fuel sample bins were kept and couldn't find any, so turned to instructor and said "where's the de-icer?" to which he looked towards the mountains, pointed to that big ball of fire, and said, "in Arizona, we use that as the de-icer!" I felt a fool!