play for a fool

play someone for a fool

Fig. to treat someone like a fool; to assume someone is naive or stupid. Don't play me for a fool. I won't have it. You are playing me for a fool! Stop it!
See also: fool, play

play somebody for a fool

  (American & Australian)
to treat someone as if they are stupid, especially by trying to get something from them in a way that is not fair He's playing you for a fool. Just don't lend him any more money.
See also: fool, play