Joke taboo is to explain jokes.

In fact, the main joke is that the two uncles are too persistent, and they all ignore life and death!

Funny point one: the distance between the two cars is only 0.000 1KM. Is it a bit exaggerated to use KM as a unit?

Funny point 2: You can think of two old people standing on bicycles swinging from side to side to grasp the balance!

Funny point 3: even if you fall, you have to stay deadlocked and continue to touch porcelain (you may not be able to fall, hehe)

The joke is a little low, hehe, everyone has different opinions. Don't spray if you are wrong. If I am right, give it to me.