Wiktionary
make a monkey of
vb. (alternative form of make a monkey out of English)
Usage examples of "make a monkey of".
Weve got a little saying in our profession that goes: Never monkey around with a psychologist, or hell make a monkey of you.
I like the old boy, but Kate Kenner won't do anything more than make a monkey of him just to spite Jackson and his band of lady knockers.