It's a struggle to keep from swallowing, but he manages. It's the simple fact that Crowley so often plays with his hair that gives it away; normally, he's always running curious fingers through it, tangling it and knotting it and then later, untangling it again.

Pretences aside, this is a long way from normal.

Aziraphael still doesn't move. It's a surprising effort to keep up the illusion of sleep, given that he can't cheat or Crowley will know.