The origin is not exactly known. The most common theory according to the Discovery Channel, is it started when Europe moved from the Julian calendar to the Gregorian Calendar in 1592. In the Julian Calendar, April 1st marked the New Year. Individuals that continued to celebrate the New Year in the Spring were labeled April Fools and were subjected to pranks and mockery by those who adopted the Gregorian New Year of January 1st.
Even prior to this, various cultures had days or holidays that were dedicated to fun, amusement and humorous acts such as the Roman Holiday of Hilaria. This too was a celebration of the New Year after the Vernal Equinox.
Whatever the origin, have fun with the jokes and pranks ~ this day should never be used to humiliate or hurt anyone. We never want to truly hamper the spirit or soul of another person.
❑❍❒Let's keep it Fun❑❍❒
