Poison d’Avril
This is the name used for the French Easter Fish and also comes in a chocolate version. An age-old tradition however, that dates back several centuries, involving the Poison d’Avril, takes place on April 1st. The great joke is for children to make fish of paper and pin as many as possible to the backs of adults, then run gleefully away yelling “Poison d’Avril!!”, which is a little like saying “April Fools!”