It's hard for a fellow to keep a chip on his shoulder if you allow him to take a bow.

A chip on his shoulder

I really had a chip on my shoulder, ... and it still comes out every now and then.

I have a huge chip on my shoulder.

I don't know if you can call it a chip on my shoulder or a monkey on my back, but I shed it today.

I think Jamaal plays better with a chip on his shoulder.