I have been watching Planet Earth on bluray with my parents (which is UH MAZE ING, btw) but, well, you know me and my 'everything is an AU fic just waiting to happen' goggles. Things, inevitably, have happened.
One's a bird of paradise doing a ridiculous dance with its wings to attract a mate, the other Sherlock Holmes doing a ridiculous dance with his coat to attract a John. BUT WHICH IS WHICH??