Brainstorm: Xiaoming has three sons. The first is Daming, the second is Er Ming, and the third is what!

Analysis: Xiaoming is the father of three sons.

Other interesting brain teasers:

1, what has no limbs and only one head is lethal?

Answer and analysis: brick (literally, there is only one word "head"; Physically, it has no limbs, only a head. If used to hit people, the lethality is definitely strong enough. )

Even if you put the knife rest around your neck, you won't hold its hand tightly. What is this?

Answer and analysis: Cactus is famous for its prickly body. No matter who holds its hand tightly, it will not be happy. )

What is the most shameless and indecent thing that the old lady did?

Answer and analysis: When drinking porridge (the old lady has sparse teeth, when drinking porridge, porridge and water will unconsciously flow downwards, and "shameless and indecent" is homophonic "toothless and indecent". )

Extended data:

Relevance extension: the origin of brain teasers;

Brainstorming originated in ancient India. Brainstorming is a series of complete comic jokes published by the culture of the times on 1989 12.06, which changed from the comic question on the previous page to the unexpected answer after flipping through it. At that time, there was a social craze in Taiwan Province Province, and all the streets and alleys were asking each other brain teasers, which evolved into a pattern of cold jokes and was later introduced to Chinese mainland.