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Cheesehead is a nickname referring to a person from Wisconsin, referring to the large volume of production of Wisconsin cheese. It is also the nickname for the fans of the Green Bay Packers American Football team of the National Football League. The term is also used as a racial slur towards the Dutch.
The current use of the term "cheesehead" as a derogatory word for Wisconsinites originated with Illinois football and baseball fans to refer to opposing Wisconsin sports fans. The term, however, was quickly embraced by Wisconsinites and is now a point of pride.
WWII German soldiers were known to call the Dutch "cheeseheads".
The original display of a "cheesehead" hat was at a Milwaukee Brewers vs. Chicago White Sox game in 1987. It was handmade by Ralph Bruno out of foam while he was cutting up his mother's couch. It was made popular by center-fielder Rick Manning, who saw the hat while playing. Bruno started a business to sell the hats as novelties. The "Cheesehead" trademark is owned by Foamation, Inc. of St. Francis, Wisconsin, which began manufacture of the wearable, foam "Cheesehead" in 1987. It has also been referred to as a "Cheese Hat" since it is legally a hat.