look who's talking
You're in no position to criticize, as in I wish Kate would be on time for once.—You do? Look who's talking! This colloquial idiom dates from the mid-1900s, although another version, you can't talk, is a century or so older.
Words nearby look who's talking
look to,
look to one's laurels,
look up,
look up and down,
look up to,
look who's talking,
look-alike,
look-down,
look-in,
look-over,
look-see