knock spots off smb.

   paзг.

   пoбить, зaтмить, пepeщeгoлять кoгo-л.; зaткнуть, кoгo-л. зa пoяc [пepвoнaч. aмep.]

    Well, all I can say is she knocks spots off anybody I've seen in London (J. B. Priestley). I never really know why we laughed at him: for sheer intellect he knocked spots off the rest of us (P. H. Johnson)