Crowley huffs, closing the book and tossing it atop the table beside him. "I don't want to check out your stupid books." he groans, then giving Aziraphale the proper Look for his comment, arms crossing before him. "Don't plan to take anything out of this building, but if I'm going to be stuck here all day I might as well find a way to entertain myself.

He's clearly irritated, Kravitz' laser vision and accusatory tones (despite how valid they are) driving him up a wall. He looks Death's errand boy with a big knife in the eye, snaps his fingers, and instantly a trickle of water falls from the ceiling of the library onto Kravtiz's head. Crowley smiles coyly as if he couldn't have possibly made that happen (except, you know, he very much did).