[tear] a strip off {sb}

to speak to or criticize a person in an angry or serious manner, particularly because of their wrongdoing

The idiom "tear a strip off someone" likely originated from the metaphorical image of forcefully tearing a strip, akin to scolding or reprimanding someone severely. This expression is used to convey the act of criticizing or chastising someone in a harsh and direct manner.

When the employee made a serious error on the important report, the manager tore a strip off him during the meeting, expressing disappointment and frustration.
After discovering the students had vandalized school property, the principal tore a strip off them in front of the entire assembly, emphasizing the importance of respect and responsibility.
The coach was quick to tear a strip off the players for their lack of commitment during the crucial match, demanding better effort and teamwork.
Upon hearing the news of the financial losses, the CEO tore a strip off the executive team, holding them accountable for the company's downturn.
When the project failed to meet expectations, the client tore a strip off the project manager, expressing dissatisfaction with the outcome and demanding immediate improvements.