I'm not sure which specific 'king in April Fools' story you are referring to. There could be many fictional or historical tales related to a king and April Fools' Day. Maybe it's a story where a king was tricked on April Fools'? Without more details, it's hard to tell the exact story.
In a king - in - April - Fools - story, the king might represent the authority figure being brought down a notch by the humor of the day. It shows that the tradition of April Fools' breaks social hierarchies, at least for a moment. The king being part of the story also makes it more interesting as it adds an element of the unexpected. It's like the whole kingdom, from the lowest peasant to the highest king, is involved in this day of light - hearted trickery.
One theory is that it dates back to 1582 in France. When France switched from the Julian calendar to the Gregorian calendar, New Year's Day was moved from April 1st to January 1st. But some people who were slow to get the news or didn't accept the change continued to celebrate New Year's on April 1st. Others made fun of them, and this gradually became the tradition of April Fools' Day.
One of the best April Fools stories is when a major news website announced that gravity was going to be reversed for a day. It caused quite a stir as people started imagining all sorts of wacky scenarios like floating furniture and people walking on ceilings. It was so believable at first because it was presented in a very official - looking news format.
The Taco Bell April Fools' prank where they said they had bought the Liberty Bell and were renaming it the Taco Liberty Bell. It was so outlandish that it made headlines. Another funny one was a website claiming that scientists had discovered that cats could now talk, but only to their owners who had a special app.
Well, there was that time when a major news outlet reported that a local zoo's penguins had learned to fly. It was all in good fun for April Fools' Day. Also, a tech company once announced that they had developed a device that could turn thoughts into text instantly as an April Fools' joke. It had people talking for days.
One year on April Fools' Day, my friend told everyone at work that the office was being turned into a yoga studio and all desks were going to be replaced with yoga mats. Everyone was so shocked until they realized it was a prank.
One year on April Fools' Day, my friend told everyone in the office that the coffee machine was now a 'latte - only' machine. People were so disappointed until they realized it was a joke.
One theory about the origin of April Fools' Day is that it dates back to 1582 in France. When France switched from the Julian calendar to the Gregorian calendar, New Year's Day was moved from April 1st to January 1st. Some people who were slow to get the news or who resisted the change continued to celebrate New Year's on April 1st and were made fun of. So, they became the 'April Fools'.
April Fools' Day has various origins. Some say it started in France when the calendar changed and people who didn't know kept celebrating the old New Year. Others think it has roots in ancient festivals of renewal and jesting.