Conversation from this morning:

Me: You keep lying there like that, I'm going to take it as invitation.
Her: I don't think you could go again right now if you wanted to.
Me: (mock indignant) I beg your pardon! I am a tool-wielding mammal, madam!
Both: (momentary silence, followed by falling out laughing)

We laugh a lot. It's how I know we're ok.