[Aziraphale doesn't really understand the memes, but the cats are cute. He actually went out of his way to enquire about Maru, wanting to see more videos of the box-loving cat after Crowley showed him the first one.]

I do beg your pardon.

[His mildly incredulous expression -- what innuendo? -- is replaced with a blush and involuntary wiggle against Crowley's hand.]

That phrasing does sound rather like a double entendre in light of recent events, doesn't it? Perhaps that Freud fellow was onto something, after all.