Английский словарь американских идиом - tell a thing or two

{v. phr.}, {informal} To tell in plain or angry words; scold. * /When John complained about the hard work, his father told him a thing or two./ * /If Bert thinks he would like to join the army, I'll tell him a thing or two that will make him change his mind./ Compare: BAWL OUT, GIVE A PIECE OF ONE'S MIND, TELL OFF, THING OR TWO.