I Won't tell you again
You're so tired of telling someone the same thing that you're ready to give them a headache and a mouthful.
Your mom told you to stop being late 20 times. Now she's screaming at the clock.
Your boss yelled at you for the same mistake 5 times. Now you're ready to quit.
Your little brother asked for candy 10 times. Now you’re biting the candy bag.