You shouldn't have! That was really thoughtful of you, mate. The bag is just....well, you've made me feel like the real professor now. Of course I'll use it. And you'll have to be the first to help me crack the bottle open!
After our 1st day! Merlin help us if the Gryffs give me crap on the first day back, but even if they do, you come round for a nip!
I'm so glad you'll be there! It will be bloody grand!