From its origins — whether in Ancient Rome, medieval England, or Renaissance Europe — to today, April Fools' Day has always capitalized on a long-held human tradition: silliness.

April Fools' Day falls on a Tuesday this year. The unofficial holiday is celebrated on April 1 every year. April Fools' Day is not recognized as a holiday in any country except for Odessa, Ukraine, where April 1 is an official city holiday. It is not a federal holiday in the U.S., although the tradition of playing pranks and jokes still goes on.

If you find yourself the target of a prank this year, just remember to take it in stride. After all, it’s tradition!