"Good, and after I leave you with the Headmaster, I'll be owling your parents," he said as he resumed walking.
"There will be rules and changes, and if I hear the words 'I want' from your mouth again, I will hex you, and trust me, you'll never be able to prove it." Of course, hexing would have been the start. "You'll also have to prove to me that you should be allowed near a cauldron any time soon, but we can have this discussion after I speak with your parents."