Your, not you're. Grr. That wasn't me!

I remember Billy Connolly at the London Palladium in 1977 spending the first three quarters of an hour of his show forensically examining the use of the expression "fuck off." One advantage of it, he mused, was the fact that it was so certain and direct. You couldn't mistake the sentiment behind it. He'd never read in a book, for example, anything like "Fuck off, he hinted..."