A hiker in Scotland stops to drink from a stream.

Just as he is lifting his hand to his mouth a passing shepherd yells out "Dinnae drink frae that, mister, it's all full o' coo piss an' shite!"

The hiker turns and in cut-glass accents replies "My good fellow, would you very much mind repeating that in the Queen's English?"

And the shepherd says, "I'm so sorry, sir, I was saying that you should cup your two hands together if you want to get a proper drink!"