Term: cheesehead
Definition: 1. colloquial term for a resident of Wisconsin, popularly thought to have been coined by a resident of a neighboring state; 2. a wedge-shaped hat, usually made of yellow foam and punctured to resemble Swiss cheese, invented in 1987 by Ralph Bruno of Milwaukee and worn to proclaim one's allegiance to the Dairy State. View more information elsewhere at wisconsinhistory.org.
[Source: "Cheeseheads" in the online exhibit Icon Wisconsin at http://www.wisconsinhistory.org/iconwisconsin/]