Apr. 1st. – April Fools Day
April Fools’ Day or April Fool’s Day is an annual (primarily) Western celebration commemorated on April 1 by playing practical jokes and spreading hoaxes. The jokes and their victims are called April fools. People playing April Fool jokes often expose their prank by shouting “April fool(s)” at the unfortunate victim(s).
Aside from April Fools’ Day, the custom of setting aside a day for the playing of harmless pranks upon one’s neighbour has historically been relatively common in the world.