A hunchback describes a person's strong body and great strength. This metaphor for men has existed since ancient times. For example, in Yue Fei's biography, Yue Jiaqilang said that they are all five big and three thick, like tigers and bears.

When they arrive at the camp, they often frighten the enemy into running away. Now, some people describe men as fierce as tigers, as strong as cows and as loud as lions.