brew your own vegetable soup

an informal nicer word for telling people to be minding their own, instead of someone elses, business. Told to someone when you actually want them to mind their own business.

(after father stops speaking on the phone)

son: Dad, who was that? just curious

father: well, you'll have to learn who it was en temps et lieux utiles. Right now, just shove off, and brew your own vegetable soup