What does a man without chestnuts mean?

A man who lacks courage, enthusiasm or mobility. A man without chestnuts is a popular online phrase in China, which is used to describe a man who lacks courage, enthusiasm or mobility. The word "man without chestnuts" comes from a joke story about a boy who wanted to climb a chestnut tree, but was afraid to act. His friend saw it and said, "How can I be a man without chestnuts?" It shows that he lacks a spirit of daring to try and take risks, and lacks confidence and courage. A man without chestnuts can be understood as a man who lacks adventure spirit and courage, or as a man who lacks self-confidence and mobility, both men and women can be used.