make a fool (out) of (someone or oneself)

make a fool (out) of (someone or oneself)

To do something that makes someone or oneself seem stupid or ridiculous. I'm not going to dance too much at the party because I don't want to make a fool out of myself in front of my coworkers. I know Greg is only trying to impress Lisa, but he's making a fool out of himself by telling so many corny jokes. Don't let him make a fool of you like that—say something back!
See also: fool, make, of
Farlex Dictionary of Idioms.

make a fool (out) of someone

 and make a monkey (out) of someone
to make someone look foolish. John made a monkey out of himself while trying to make a fool out of Jim. John made a fool out of himself at the party. Are you trying to make a monkey out of me?
See also: fool, make, of
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

make a fool of

Also, make an ass or monkey out of . Cause someone or oneself to look foolish or stupid. For example, John doesn't mind making a fool of himself at parties, or They made an ass of me by giving me the wrong instructions, or Just watch him make a monkey out of this amateur chess player. The use of fool and ass date from the early 1600s; the latter is sometimes put more rudely as make a horse's ass of, alluding to a horse's behind. The use of monkey dates from about 1900.
See also: fool, make, of
The American Heritage® Dictionary of Idioms by Christine Ammer.

make a ˈfool of somebody/yourself

make somebody/yourself appear stupid or ridiculous: Last time you drank champagne, you made a complete fool of yourself. The interviewer made a real fool of me; I just couldn’t answer her question.
See also: fool, make, of, somebody
Farlex Partner Idioms Dictionary
See also:
  • leave (someone, something, or oneself) (wide) open for (something)
  • leave oneself wide open for
  • leave open
  • leave yourself wide open to something
  • leave (someone, something, or oneself) (wide) open to (something)
  • reproach (someone or something) with (something)
  • reproach with
  • for (one's) (own) sake
  • for sake
  • sell someone short