I love April Fool’s Day because it stretches what we want to believe is true.

The origin of April Fool’s Day according to one web site is

“In 1582, in France, the new year was celebrated for eight days, beginning on March 25. The celebration culminated on April 1. With the reform of the calendar under Charles IX, the Gregorian Calendar was introduced, and New Year’s Day was moved to January 1. However, communications being what they were in the days when news traveled by foot, many people did not receive the news for several years. Others, the more obstinate crowd, refused to accept the new calendar and continued to celebrate the new year on April 1. These backward folk were labeled as “fools” by the general populace. They were subject to some ridicule, and were often sent on “fools errands” or were made the butt of other practical jokes.”

Another site lists the Top 100 April Fool’s Hoaxes of all time!