Tell a joke quickly.

One day, Xiaoming put a plaster on his hand.

The teacher asked: What happened to your hand?

Xiao Ming said: It's broken.

The teacher said: Why?

Xiaoming said: Because I am too lazy.

The teacher said: Too lazy will break your hand?

Xiao Ming said: I was walking on the road and my shoes hit a stone.

But I'm too lazy to do it by hand,

Just shake your feet with a telephone pole and let the stone fall out.

Passers-by thought I was electrocuted and hit my hand with a wooden stick.

therefore .................

Teacher: ............