[While not actually British, Crowley has lived in Britain long enough that he's easily able to translate I don't want to be a bother to it's true meaning, which is that it's a yes that doesn't want to be a yes.]

Isn't a bother. You want more of the same, or — [He holds up a finger in a 'wait' gesture, crossing to the fridge to have another rifle around inside.] Oh, there's a shepherd's pie in here, s'meat and veg and potato, y'want some of that?

[How old is it? It doesn't matter because Crowley refuses to allow food in his fridge to go bad, so it'll be as good as if it was freshly made. The perks of being a demon.]