im org. from Harrietta michigan and we never had it that i knew of till around 1976-1978 when the detroiters started to come settle up north in Michigan,but also then there was a surge of occult clubs at that time as well,other wise we throw our rotten eggs on holloween as well,it could also have sprung up with a new way to get by the cops:}we waxed windows back then too the good kids used soap !