Explain the meaning of the idiom "to have a chip on your shoulder".
The phrase “to have a chip on your shoulder” means to hold a grudge or resentment towards someone or something, often to the point of feeling aggrieved or entitled to be treated better. It is often associated with someone who carries an attitude of defensiveness or stubbornness, or never letting go of a problem.
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### Instruction:
Explain the meaning of the idiom "to have a chip on your shoulder".

### Response:
The phrase “to have a chip on your shoulder” means to hold a grudge or resentment towards someone or something, often to the point of feeling aggrieved or entitled to be treated better. It is often associated with someone who carries an attitude of defensiveness or stubbornness, or never letting go of a problem.