soap scrimmage
n.— «Russell High School football coach Merle “Bones” Nay, has announced that a “soap scrimmage” will be held Friday at the school. Admission to the scrimmage will be one bar of soap, to be used by the athletic department throughout the year.» —“Russell HS Plans “Soap Scrimmage”” Western Kansas Press (Great Bend) Sept. 5, 1962. (source: Double-Tongued Dictionary)