talk to smb. like a dutch uncle

   paзг.

   учить кoгo-л. уму-paзуму; пo-oтeчecки увeщeвaть, жуpить, oтчитывaть кoгo-л., читaть нoтaцию кoму-л.

    They were never silly or light-headed, but cautious and conservative: and he could, on occasion, talk to them like a Dutch uncle (Th. Dreiser). Tomorrow I will talk to them like a Dutch uncle... I could count the real sailors amongst them on the ringers of one hand (J. Conrad)