What's the meaning of "I know you are but what am I?"?
The Wiktionary page gives a definition that kind of confused me:
Assertion that an insult made by the party to whom the phrase is directed is actually true of that party, and not of the person using the phrase.
If I follow the definition correctly, this phrase means "The accusations that I am making are absolutely true about you and not true about me".
I stumbled upon this phrase in todays' ABCNEWS article on Yahoo! that reports on how Russian President Putin responded to Biden's calling him a killer.
Putin used a phrase that is common among children in Russia:
Кто так обзывается, сам так называется
which literally means "The one who calls me that thing is, in fact, that very thing"
And the meaning is "You are accusing me of something, but aren't you yourself doing that?"
Right after saying that phrase, Putin explained: "When we start passing judgments on any nation on earth, we must keep in mind that we are looking in the mirror as in any nation we can find reflection of ourselves"
So, if my understanding of the definition given in Wiktionary is correct, then it looks like Putin's phrase was mistranslated in the article.