"That's between her and me, eh?"
And that is just as it should be.
Loved this. Love the idea of River and the TARDIS a having their very own language to taunt the Doctor....I, uh, I mean COMMUNICATE with the Doctor. That's brilliant!
The idea is really cool.
Aw, I love it. That's a great idea that it's a language the Tardis and River invented just to bedevil him. Perfect!