Why do upside-down mice laugh?

The reason why the mice laughed was that they saw the mousetrap on the ceiling.

In the story of "upside down mouse", the mice burst into laughter because they saw the mousetrap on the ceiling. They think this is a big joke, because the mousetrap is placed on the ceiling, which is very stupid in their view.

This story is actually a fable. Through the behavior and reaction of mice, a profound truth is conveyed to people: when the world seems upside down and chaotic, we should stand firm. When the mice saw the mousetrap on the ceiling, they chose to laugh because they couldn't understand the meaning behind it.

However, when the old man stuck everything upside down on the ceiling, the mice mistakenly thought they were standing on the ceiling, so they chose to stand upside down to adapt to this "new environment". As a result, they fainted because the blood rushed to their heads.