McFred era at Manchester United is over

How would you go about finding the first recorded use of the word ‘McFred’?

Initially, you could try a heavily-filtered Google search. When that does not work, you might scour newspaper clippings. You could spend an entire afternoon hunched over a microfiche reader in the British Library if you really wanted. But having tried all that with no luck, we eventually realised it is probably somewhere out there on Twitter.