Look who's talking!
look who's talking
One is guilty of the same thing they have just criticized. A: "Kathy never pays attention in class." B: "Look who's talking! Just today I saw you reading a magazine during the lecture."
Look who's talking!
Fig. You are guilty of doing the same thing that you have criticized someone else for doing or that you accused someone else of doing. Andy: You criticize me for being late! Look who's talking! You just missed your flight! Jane: Well, nobody's perfect. Mary: You just talk and talk, you go on much too long about practically nothing, and you never give a chance for any one else to talk, and you just don't know when to stop! Sally: Look who's talking!
See also: look