"Oh no, goats milk in tea?" He pulled a face at that, "No, you have to get that from cows, tastes better if you do." And the Doctor watched as the cow turned into a steak and then burst into flames. So the Doctor changed it to be on a plate with some chips and mushy peas. Mmmm, yummy!

Oh look, there's another cloud formation changing. It's a memory from their past, a memory from before, from when they were friends.