What Occasioned This Moniker?

Never really gave it a thought as to how people came to designate the 1st of April of each year as April Fool.

Of course, I do not want to google it. I want it from one of you guys on WordPress because it would sound much better, much more relatable getting it from WordPress peers than something plucked from Google.

I am, salivatingly; waiting, guys.

Thank You. Keep Reading.