Buy a tie and drink water

There's this man and his travelling across the desert, and he suddenly finds he hasn't got any water left. So his starting to get worried, and his very thirsty, but luckily, a man comes towards him on a camel. So he said to the man, ' I'm thirsty. Have you got any water?' and the other man says, ' No, I haven't, but I've got a wonderful selection of ties. Would you like to by one?' So the other man says, 'No , of course not!' and man rides away on his camel. After about another hour or two, he's desperately thirsty and he sees a beautiful 5-star hotel. So he slowly goes up the steps, crying ' water! water!' and the hotel manager says, "I'm sorry, sir. You can't come in here without tie."