A guy is lost in the desert and desperately needs a drink. As he follows the dunes, he comes upon another man riding a camel. He asks the man if he has something to drink.

The man on the camel said, "No, but if you like, I have a nice selection of ties. Would you like to buy one?"

"No!" The first man replies. "Are you crazy?  I need something to drink, not a tie!"

So the man on the camel tells him that there is a cantina just a day's walk ahead. So the walking man continues his
slow and thirsty trek until finally he comes upon the cantina.

He gratefully approaches the doorman and begs, "I'm so glad I made it! Can I get in and have some water?"

The doorman frowned at him. "Not without a tie."