make a monkey of someone
make a monkey (out) of (someone or oneself)
To do something that makes someone (or oneself) seem stupid or ridiculous. I know Greg is only trying to impress Lisa, but he's making a monkey out of himself by telling so many corny jokes. I'm not going to dance too much at the party because I don't want to make a monkey out of myself in front of my coworkers.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
make a monkey of (or out of) someonehumiliate someone by making them appear ridiculous.
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