Tell a depressing joke.

A college student found that his notebook was not enough, so he went to the store to buy it. A gloomy voice came from the shop: "What do you want to buy, son?" I saw an ugly old man coming slowly. "I want a notebook." He doesn't want to stay here for long. The old man handed him a thick notebook, "25 yuan."

"What? So expensive? Ok, ok, 25 is 25. " The college students gave money and just wanted to leave, but they were stopped by the old man. "Don't turn to the last page, or something terrible will happen." The college students left trembling.

When he got home, he put his notebook on the windowsill and went to take a shower. After taking a shower, he suddenly found that his notebook was blown away by the wind and began to turn to the last page ... The college students were very scared.

He slowly opened his eyes.

I saw it impressively printed: the price is three yuan.

This is original, please, how can anyone copy it?