How many times do I have to tell you?

Meaning

A stern warning used by parents or authority figures to signal that their patience is wearing thin. It is rarely an actual request for a numerical count.

Stern, parental

Used in a sentence

• How many times do I have to tell you to clean your room?
• He sighed, how many times do I have to tell you not to leave the door open?
• The teacher looked at the chatty student and asked, how many times do I have to tell you to sit down?