Hoaxes are part of the history of humanity, and if you want to get in on the fun this year, check out this website for some ideas. The Museum of Hoaxes will also alert you to whether someone is pulling your own leg.
Did you hear about the little girls in England who took photos of real fairies in their back yard? A hoax.
What about crop circles? An amazingly elaborate hoax carried on by a lot of people.
And some April Fool's Day pranks are right here, including the best ever prank...Just please don't play any cruel jokes on your friends.