It's rather more than a yelp this time; Aziraphael lets out something perilously close to a shriek (a little exaggerated, truth be told) and sits bolt upright.

He eyes the culprit, hair and eyes wild and an extremely disapproving (but priceless) expression on his face. It's fortunate that the bed is so large, because he lunges forward with something between a laugh and a growl, and half-pushes, half-tackles Crowley to the mattress once again.

Turn and turn about, indeed.