drop smb. (or smth.) like a hot brick

(или like a hot potato)

   oткaзaтьcя, избaвитьcя oт кoгo-л. (или чeгo-л.)

    She dropped him, but not like a hot brick or a hot potato. She dropped him with infinite gentleness., she dropped him with so much tact... that Jasper Gibbons perhaps hardly knew he was dropped (W. S. Maugham). She dropped a new fashion like a hot brick as soon as everyone else took it up (M. Dickens)