This thread on animal headgear reminds me of the tale of when Prince Charles turned up at the ceremony to confer the "Royal" title on a west country town wearing a fox fur round his head. His Mother asked him why and he replied that his father had told him too.
"I don't remember that", the Duke remonstrated.
"Yes Pater, you must remember" said Charles, "It was when Mater came home and said,"We're off to Wootton Bassett next week", and you turned to me and said,"Wear the fox hat".