Got a chip on your shoulder

Meaning

This describes someone who is perpetually grumpy or looking for a fight. It implies they are carrying around a grudge like a literal weight.

Accusatory, blunt

Used in a sentence

• You have really had a chip on your shoulder ever since the boss denied your vacation request.
• Stop acting like the world is out to get you and lose that chip on your shoulder.
• He showed up to the family dinner with a chip on his shoulder and argued about everything.