Who can tell me a joke?

Bicycles in school are lost seriously, and the new ones disappear in the blink of an eye, but sometimes with luck, the lost bicycles will reappear every few days. One day, Xiao Jing, a roommate, bought a new transmission car. She showed off to everyone and said, "I locked this car with the latest lock!" " The next day, Xiao Jing came back from self-study at night and looked depressed. He still holds a piece of paper in his hand, which reads: Don't be the owner here, I borrowed the car, and I'll pay you back in a few days!