What are some of the joyful and sad reversal stories?

There is a movie called Dream Travel, in which the little boy always thought that the god of song was his grandfather, and then in order to pursue his dream, he embarked on the road to find his grandfather, and met a person on the road, in the eyes of the little boy, this person is not a proper job, not as good as his grandfather's finger. However, in exchange, the man promised to help him find his maternal grandfather. Later, the boy finds his grandfather, who is the god of songs, but then he discovers that his grandfather is actually a murderer, and when he learns the news, his grandfather locks him up, and then he meets the man again, and then he discovers that this man is his real grandfather.

Then the two recognize each other and defeat the bad guy together.

That day, a friend of mine told me a joke and I laughed so hard that my stomach hurt and I went to the hospital. The doctor asked me why I was laughing like that, and I told him the joke. I didn't expect him to laugh wildly when he heard it, and he couldn't stop laughing, and then we laughed all night, which was a joke that a friend of mine told me, hahahaha.

Once I went to buy a lottery ticket, I won it, and then I took a closer look at the numbers from the previous draw.

Last night at the bar, I met a half-aged. Although she is 46 years old, she is still charming, we push the cup and change the glass, and I heard that she is divorced, I happen to be single, and after chatting for a long time, she told me that her remarried husband came to pick her up, and I was confused.

Here's the thing, I went shopping with my boyfriend, and I was very happy, and then I bought all kinds of clothes, because it was the day of the salary, and in the afternoon when I saw how much money was left in the salary card, we were both sad.

I was glad I figured out my sister's math problem, and then smiled and showed my mom if it was right, and then accidentally dropped my sister's homework book into the water.

I still vaguely remember that day, my cousin and I were at home in the whole house, and then I told her jokes, and we were both happy, and then my cousin pulled it, and I changed her diaper.

I was very confused, that is, when I was playing with my nephew, I was very happy, but because I was so happy that I didn't notice him for a while, I fell there, and I was reprimanded by my mother.