Ah, but all of it was to further my truly wicked ends -

[ He laughs because even he can't keep a straight face for so blatant a lie. Oh, when he got caught, he could spin it to his former superiors as some grand evil scheme, but
Aziraphale knew. And Crowley is quite happy for it.

The little giggle from the angel earns him a tender kiss to the cheek. ]

Double that if they're an actual historian. Or claim to be.