Give (someone) a piece of (one's) mind Verb + object/complement informal
To speak to someone in an irritable manner
I assert that they knew this watch had been scratched before delivery, so I am trying to contact the dealer and give them a piece of my mind.
I can't help giving that man a piece of my mind.
A harsh reproof
A severe criticism or rebuke that's used to dismiss someone
1. To dress more informally than usual
2. To scold someone harshly
To criticize someone in an extremely aggressive and angry way
To scold someone severely or angrily
The verb "give" must be conjugated according to its tense.