Some years ago I was listening to a radio phone in the morning after a new large crop circle had appeared. Caller after caller came on with theories from magnetic annomalies, local air vortices and the obligitory alien spacecraft as the cause. Final a caller came on and said that alien spacecraft could be discounted as a cause and went on to say that crop circles could be explained by little understood meteoralogical phenomena and went into a deeply scientific monologue to explain it all. After about 5 minutes, the DJ said "that sounds very plausible, are you a meterologist", " No" said the guy "a Martian".
