How did the mouse eat the elephant?

This is just a humorous proverb or joke. In fact, mice can't eat elephants. This sentence is usually used to describe a weak individual who successfully defeated a powerful opponent through clever methods or strategies. After all, rats may find caves under the feet of elephants, destroying the infrastructure of large animals, which will lead to the collapse of elephants. But this is just a humorous statement, which can't be realized in fact.