have a chip on your shoulder (about something)
idiomPart ofchip
have a chip on your shoulder (about something) — idiom
1. This idiom means to feel angry or resentful about a past event and become easily
1.idiom
Definition
This idiom means to feel angry or resentful about a past event and become easily offended when it is mentioned.
Example
Sara has a chip on her shoulder about losing the competition.
Diego has a chip on his shoulder regarding his childhood poverty.