April mop !!!!!

Have you ever Become a victim of ignorant your friend ? Your friends ever lie to you ?
and it all happened in early April ?! If the answer is "yes", it means you have felt "April fools day" or "April mop".

"April mop !!!!" it's usually your friend say after they successfully lied to you. what is April mop ????
April fools day or April mop is a day where people are free to lie to anyone. Celebrated annually on 1st April each year. On that day, people considered to be lying or giving jokes to others without being considered guilty. This day is marked with a hokey-deceptive and other jokes on family, enemies, friends and even neighbors with the aim to embarrass the gullible. In some countries such as the UK and Australia as well as South Africa, the jokes only be done until noon or before noon. A person who plays a trick after noon is called "April Fool".  However in other places such as Canada, France , Ireland, Italy, Russia, the Netherlands, and the United States played a joke-free throughout the day. April fools day was also celebrated on the Internet.
How the actual history of April mop ? many things are touted as the history of april mop. The following are some of the versions are referred to as the beginning of april mop.

April events of Bloody 
1 April 1487 M into a bloody event when thousands of Muslims slaughtered by the Crusaders in Spain in Granada port that also burned. Initially they were promised freedom origin want to leave Spain and the whole arsenal with up ships in the harbor. Major fraud action on April 1, is now remembered as "The April Fool's Day".

The European version 
In 1582, Pope Gregory XIII ordered the turn of the Julian calendar. Popular tradition tells that some Europeans were not informed of the change and continued to celebrate the New Year on April 1 of the previous Julian calendar.

Version Joseph Boskin 
A professor of history at Boston University named Joseph Boskin said that the April Fool's Day began in the reign of Constantine. Constantine humorous clown allows palace named Kugel to be king for a day. Furthermore, the clown declaring April 1 as the day of the absurdity or unreasonable which later became an annual event.

And many other versions of the so called background for the April Fool's Day. Some people also believe that April mop is an ancient practice. Although not celebrated on the same day, ancient cultures have observed the day when people can make jokes together.
So....Which one do you think is most plausible ?!Is going to be celebrating? The answer is up to you. But definitely, every treatment will surely be consequences. If you do not want bullied or lied to, you should not lie.