"The mangy dog ​​that cannot be shaken off" is a metaphor used to describe someone or something that is like a mangy dog ​​that cannot be shaken off, always entangled and difficult to get rid of. This metaphor is often used to describe those annoying and unpopular people or things, such as a friend who is always entangled, a troublesome thing that cannot be eliminated, etc.

In this metaphor, "mangy dog" is usually used to describe people or things that are unpopular and unpopular. The characteristic of mangy dogs is that they usually stick around and refuse to leave, just like those annoying people or things, which always make people feel annoyed and uneasy.

Therefore, the metaphor of "the mangy dog ​​that cannot be shaken off" can be used to describe those annoying and difficult to get rid of. Problems or people remind people to be wary of these unwelcome presences and to take steps to get rid of them whenever possible. At the same time, you also need to be careful not to become a "skinny dog" in the eyes of others, maintain your independence and autonomy, and avoid entangled behaviors.