露尾巴

露尾巴

Literally means:

unveil one's tail

Actually means:

尾巴 originally refers to the tail of a fox. According to the folklore, a fox tried to bewitch men by turning itself into a beautiful woman, but its tail be trayed it.

The phrase figuratively means revealing a fact that one tries to conceal. It often indicates that an evil person shows his true colors. Derogatory.

尾巴，原指狐狸的尾巴。民间故事说，狐狸虽然可以变成美女来迷人，但是由于还带着尾巴，从而露出破绽。

露尾巴，比喻露出破绽，暴露企图掩饰的真相。多表示坏人暴露了出本来的面目。具有贬义色彩。