The girl asked if you would like to be my eunuch.

It is impolite for a girl to ask if you would like to be my eunuch.

"Eunuch" is the title of male officials who castrated reproductive organs in ancient courts, which is insulting and discriminatory. In modern society, this word is no longer widely used, nor is it considered as an expression of respect and dignity. If a girl asks you this, I suggest you tell her gently that you don't like this name and don't like being restricted.