"Hey, who bought the milk?"
Oldest son, "I did."
"Do you need to be reimbursed for it?
Son: "No. I wanted to buy something with my own money, and I bought chocolate milk"
"O.K. then, next time could you get organic milk?"
Son: "Why? this one was cheaper. And why does it need to be organic anyway? You know Abraham lived a long time without organic milk. "
(not wanting to get into this at that moment) "O.K. well, I guess it won't kill you.."
Son: "Yeah. I had this urge to die.. So, I bought non-organic milk, in hopes of it killing me.."
Whatever! Muck it on down then!