“Look who's talking” in Japanese
Short answer
Look who's talking in Japanese is “どの口が言う” (donokuchigaiu). Full meaning: look who's talking, I don't want to hear it from you, are you in any position to say that?.
Other ways to say “Look who's talking” in Japanese
お前が言うな
omaegaiuna look who's talking, you're one to talk, you can talk
人のこと言えない
hitonokotoienai not one to talk, who are you to say, look who's talking
Looking for the other direction? Search any Japanese word in the Nihoner lexicon, or practise what you have learned in the learning games.