WHOCHURCH: The Chris Chibnall era

Then I spent a long time thinking about body-swapping - so the Master becomes the Doctor and vice versa, which would give us Evil David Tennant. That would be fantastic, especially in his swansong. But again, it's predictable. And they'd only end up swapping back. Also, in David's swansong (why's it called a swansong?), I want to see the Doctor, not an evil version. I want him in all his wonderfulness, centre-stage.

RTD, 2009.

I just stumbled across this parody and I cannot stop wheezing

https://www.youtube.com/watch?v=noaMIy_FWsA