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 sets off, but he only gets half way.

Then the Scotsman sets off, and he only gets half way too.

But the Chinise guy manages to get all the way across the desert.

The Englishman and the Scottsman asked him how he could possibly do that without any water?

Me Chinese. Me not Silly, Me stick mouth round doggys willy