Oh dear. Paul McCartney, thumb-obsessed ex-ruler of The Beatles, has done a Miley.

We’ve all been there: you’re walking along with your granddad, when suddenly you spot someone approaching who is quite obviously not of your racial group. Your head sinks way down into your thorax, as the old man rather loudly says, “Hey, look. It’s a [horrific racial slur]”. Paul McCartney’s staff recently found themselves in a very similar position at an airport.