get ideas

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get (any) ideas

To have thoughts or schemes about taking advantage of a particular person or situation. Often used in a negative imperative. I know you're excited that your parents are going out, but don't get any ideas—I'll be here watching you all night. We have an extra guard posted outside in case the prisoner gets any ideas.
See also: get, idea
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

get (or give someone) ideas

become (or make someone) ambitious, big-headed, or tempted to do something against someone else's will, especially make a sexual advance. informal
See also: get, idea
Farlex Partner Idioms Dictionary © Farlex 2017
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