An arab walks into a bar.

As he enters he sees a man with a jewish haistyle so he assumes he's jewish.
Then he shouts: "Drink for everyone expect that jew!"
But the jew just smiles at him and shouts: "thanks!". So the arab gets angry and orders another drink for everyone expect the jew.
But the jew just smiles at him again and shouts: "thanks!". So the arab gets even more angry and orders yet another drink for everyone expect the jew.
When the jew does the same thing as before, the arab asks the bearman: "Is that man crazy? I orded 3 drinks for everyone expect him and he just smiles and thanks me.
And the barman answers: "No, he is the owner of this bar.