There were three men: an Englishman, a Scotsman, and a Chinese guy. They were
having a competition to see which one could walk his dog over the desert without
needing a drink.
So the Englishman set off, but he only got half way.
Then the Scotsman set off, and he only got half way too.
But the Chinese guy managed to get all the way across the desert.
The Englishman and the Scotsman asked him how he could possibly do that without
"Me Chinese. Me not Silly, Me stick mouth round doggy's willy"