Learn what "it takes one to know one" means, when people say it, and how to use it naturally in English.

It means the speaker is insulting the other person by implying they share the same bad quality.
From The Perfect Husband, Episode 42
The speaker turns an insult back on the other person.
Use this in teasing or arguments when you want a sharp comeback. It is common but can sound rude if the mood is serious.
Scenes unlock real expressions as you watch
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