serve one right
serve right
To be what (someone) really deserves as a punishment; be a fair exchange for what (someone) has done or said or failed to do or say.
He failed his exam; it served him right because he had not studied.
Bob said it served Sally right when she cut her finger; she had taken his knife without asking him.
It serves Jonathan right to be fired from his job.
It serves Terence right that none of his friends are willing to help him move to a new apartment.