Wood science, I suppose.

Your hair is the roof of your mouth.

My bugbear with Mc’D’s is how they now always ask you if you are using their damned app.

I know I shouldn’t, and that they’re just teenagers reading from a script. But I just can’t help myself. Whenever they ask if I’ll be using the app, I flippantly reply, “nah, I don’t want Ronald reading my email.”