April Fool's Day 

1. April Fool's Day is held on April 1st. 

2. The purpose of April Fool's is to play practical jokes and hoaxes on each other, the jokes and their victims are known as "April Fools" 

It's been popular since the 19th century 

It is well known in Canada, Europe, Brazil, Australia and the United States 

3. The origins of April fool's is obscure 

The most commonly cited theory holds that it dates from about 1582, the year France adopted the Gregorian Calendar , which shifted the observance of New Year's Day from the end of March (around the time of the March  to the first of January. 

According to popular lore, some folks, out of ignorance, stubbornness, or both, continued to ring in the New Year on April first and were made the butt of jokes and pranks on account of their "foolishness." This became an annual tradition which ultimately spread throughout Europe and other parts of the world.

4. Pros:

• It's light hearten
• It's fun 
• playful 
• It's fun to plan 
• Causes laughter 

Cons: 

• Can become mean spirited 
• Can cause distrust 
• Can become dangerous
• Can be taken over the top
• Someone can get hurt