There are few things harder to police than kids looking for something raunchy on the internet. And slapping an 18 sticker on something is probably the most efficient way of telling the 17-and-unders that they absolutely have to have a peek at what’s on the other side.

Yes, Vevo, YouTube and other video platforms can (and should) put mechanisms in place to stop young ‘uns accessing content that’s a bit too blue for their innocent eyes, but we’ve seen all ...