Translation guide
A sarcastic retort used to point out hypocrisy, meaning 'you are guilty of the same thing you just criticized.'
To call out someone who criticizes another for a fault they themselves have.
Look who's talking! · You're one to talk! · That's rich coming from you! · You can talk!
"Don't be late." "Look who's talking!"
A common casual retort meaning 'you're one to talk' or 'that's rich coming from you.' Often used with a sarcastic tone.
"You should study more." "Look who's talking, you don't study either."
Literally 'don't you say that,' a blunt and masculine way to call out hypocrisy. Used among close male friends or in rough speech.
"You drink too much." "Look who's talking!"
A rhetorical question meaning 'can you say that about others?' implying the listener is no better. Softer than direct accusations.
"He's always late." "Look who's talking?"
Literally 'what about yourself?' A more straightforward way to point out hypocrisy, but less idiomatic as a set phrase.
"You should exercise more." "What about yourself?"
These phrases are inherently confrontational and sarcastic. Avoid using them in formal or polite situations. In Japanese, direct accusations of hypocrisy can be very rude; use only with close friends or in casual settings.
Even among friends, 'どの口が言うか' can sound harsh.
To make the point less aggressively, you can use a rhetorical question like 「人のこと言える？」 or add a softening phrase like 「ちょっと」 or 「なんか」. However, the sarcasm may still be clear.
Though I'm not one to talk either.