April Fools’ Day is celebrated in many countries across this foolish world. In some more serious countries, the pranks end at noon and everyone who plays a trick after noon will be harshly labeled an “April Fool.” In more fun-loving countries like the United States, the pranks continue all day. In France, April 1st is nicknamed Poisson d’Avril, or “April Fish.” French children may tape an image of a fish on the back of one of their peers, shouting “Poisson d’Avril!” once the prank is revealed. French children can be absolutely sinister.