lid
n.— «And they give out a “Lid of the Month” award—part honor, part joke, it is a wooden commode seat, which when lifted reveals a mirror and the engraved call signs of past recipients. “Lid” is a term for a poor radio operator. “Lid-like” behavior is anything from forgetting to turn off music when transmitting or accidentally cursing on-air.» —“Annual salute honors hams” by Peggy Lim News & Observer (Raleigh, North Carolina) Nov. 16, 2006. (source: Double-Tongued Dictionary)
Further reading
The adjective corny describes someone or something “unsophisticated” or “naive.” This sense of corny goes back at least as far as the 1920s. Seed catalogs of the time often contained bits of goofy jokes and broad humor...