read (someone) the riot act
US /riːd ðə ˈraɪət ækt/
UK /riːd ðə ˈraɪət ækt/

1.
memberi teguran keras, memarahi habis-habisan
to reprimand someone severely and warn them to improve their behavior
:
•
After he broke curfew again, his parents decided to read him the riot act.
Setelah dia melanggar jam malam lagi, orang tuanya memutuskan untuk memberinya teguran keras.
•
The manager had to read the team the riot act after their poor performance.
Manajer harus memberi teguran keras kepada tim setelah penampilan buruk mereka.