eat your carrots and broccoli
when an adult is trying to avoid a headache and just wants you to stop being annoying
Brother: Eat your carrots and broccoli. I swear I'll throw your veggies at you.
Friend: Eat your carrots and broccoli. I can't deal with your dumb questions right now.
Cousin: Eat your carrots and broccoli. I'm trying to watch TV here.