"Black Spot" public discretion cards, 1978
Scarfolk Council had a few problems with outsiders, or "Scarfnots" as they were known, interfering in town affairs throughout the 1970s, so it developed a scheme to encourage civic discretion.
The severity of punishment for a "loose tongue" more or less guaranteed obedience, though a few Black Spot cards were issued.
For example, four year old Jeremy Chapped inadvertently discussed with his "Scarfnot" trepanning teacher the sudden, inexplicable appearances of ancient megaliths in schools and community centres, and found himself facing capital punishment.
In lieu of this penalty he pushed an unloved aunt in the path of a speeding hovercraft for which he received not only a cub scout badge, but also a £5 book token from the mayor.