It took Harry 12 seconds to realise Ron was taking the piss out of him. Ten seconds for his stomach to fully hit bottom so he could think again, and two to scowl hard enough at the parchment that he put a small, black scorch-hole in it.
Tearing off Ron's message, Harry quickly used the same parchment to fire off a reply to his best mate.
Ron, did you read the owl? I meant for it to go to Leila, as I feel she has the necessary skills to help out with this new threat. When a great herd of baked chicken legs attack, I'll be sure to give you a Floo. - Harry