...so Mark Thatcher is lost in a desert without food and water.
After two days wandering he is becoming delirious. Suddenly he sees a small figure in the distance and drags himself over to find a man in Arab garb holding a tray.
"Water???", cries Thatcher desperately.
"Sorry sir, I'm selling ties. Do you want to buy a tie?". The man profers his tray of bright fabric neckwear.
Thatcher is mortified and continues his wandering. He encounters three more of the tie vendors in the next 2 days but no sign of water. He is desperate.
The next day he is on the verge of giving up and pulls himself over another dune to suddenly find .... a beautiful Oasis Club with a swimming pool and people lounging at tables laughing and drinking long cool drinks under parasols!!!
He crawls along using every last ounce of remaining strength until he is on the edge of the buildings where a tall man in uniform comes out to meet him.
Thatcher looks up from the sand at the tall man. "Thank god I've found you! I've had no food or drink for 5 days...please let me in".
The uniformed man looks down disdainfully. "Not without a tie, mate!".