April Fools’ Day is an annual custom on April 1, where people play practical jokes and pranks on each other and have fun trying to make other people believe things that are not true. Some of these pranks involve the “endorsement of flat Earth.”
After some time, it can be less obvious that these are just practical jokes created for April Fools’ Day, and many flat-Earthers fail to realize that they are the ones being joked about. In flat-Earth communities, some of these pranks are incorrectly regarded as genuine and end up as hoaxes.