Water for the Emir?

An Arab diplomat visiting the US for the first time was being wined and dined by the state department. The Grand Emir wasn't used to the salt in American food (french fries, cheese,etc.) and was constantly sending his man-servant Abdul, to fetch him a glass of water. Time and again, Abdul would scamper off and return with a glass of water. But finally he returned empty handed.
"Abdul you son of an ugly camel, where's my water?" demanded the Grand Emir.
" A thousand pardons oh illustrious one," stammered the wretched Abdul, "but a man is sitting on the well."