This seems an obvious contender:
British April Fool’s jokes have been banned this year under an archaic parliamentary order, amid warnings the public can no longer tell the difference between reality and farce.
The statute from 1653 states that the issuing of false reports is strictly prohibited and punishable by the splitting of an offender’s ribs.
Officials in the Cabinet Office have taken the unusual step of asking media outlets to refrain from publishing the traditional stories on April 1 in case they trigger panic buying or spark riots.
The original statute was imposed by Oliver Cromwell when he became convinced that the public’s mocking of his warts was undermining attempts to crush royalists after the civil war.
The Daily Mash would have written that up rather better I fear.