Maybe they figured I was owed a break.

[What a vague and ambiguous sentence! That he barely even thinks twice about because he's trying not to look jealous about that cigarette.

He could ask for one, like a normal person, but if Aziraphale catches him smoking, he'll be cross with him.

This is a perfectly normal thought for a demon to have.]

They're easy, really, just don't talk down to 'em. Most are smarter than you'd think, and they know when you're being patronizing.