try out on
try (something) out on (one)
To test something on one, in order to get their feedback on it. These cookies should be a big hit at the bake sale—I tried them out on my kids, and they gobbled them right up. Try your proposal out on me, and I'll tell you how good or bad it sounds.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
try something out on someone
to see how someone responds to something or some idea. Let me try this idea out on you and see what you think. Let me try out this new medicine on her.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.