At this moment Bones just said 'Spock, do me a favor, and don't say it's fascinating.' And Spock's about to say 'No doctor, but it is. interesting' and then Bones will roll his eyes. So the answer is all
Quote from The Big Bang Theory │ Amy Farrah Fowler: I was afraid you’d be too tired. Sheldon Cooper: Amy, I just saw a magic train and reported somebody for cutting the line. If that’s not foreplay, I don’t know what is.