To give somebody a piece of my mind is to deliver an angry telling-off they deserve. Give him a piece of my mind, she got a piece of my mind.
It always takes give, and the possessive changes with the speaker, so others give a piece of their mind. The phrase promises frankness rather than fairness.
1phrasea piece of my mindAn angry telling-off you give someone who deserves it.
“I went round there and gave him a piece of my mind.”
a piece of my mind is a phrase.
Also accepted in games: piece of my mind, give someone a piece of my mind, give a piece of my mind, a piece of your mind, piece of your mind
Practised in Idioms