April Fools' Day or April Fool's Day is an annual custom on 1 April consisting of practical jokes and hoaxes.

In Scotland, April Fools' Day was originally called "Huntigowk Day". The name is a corruption of "hunt the gowk", gowk being Scots for a cuckoo or a foolish person.

The traditional prank is to ask someone to deliver a sealed message that supposedly requests help of some sort. In fact, the message reads "Dinna laugh, dinna smile. Hunt the gowk another mile." The recipient, upon reading it, will explain they can only help if they first contact another person, and they send the victim to this next person with an identical message, with the same result.

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