Hi Kafenes; I am glad somebody asked. I thought may be some of the more literal TCs would explain. But here goes. The story is from my late uncle who was a great teacher. At one time he taught at the English School in Nicosia. nyway The story he related is as follows: A couple of hundred years ago a villager went to Lefkosia looking for his friend (I cannot remember why) he approached the Southern gates of the town and was asking around if anybody had seen his friend. They asked him (the villager was quite simple minded) what was his friend was like, was he tall, was he fat,this and that. The villager kept on saying "I dont know". He approached the gates and asked the guard, "have you seen my friend?" the guard says no, and asked the same questions as the other people. The villager replied ". oh I dont know". "Well you must know something about him" says the guard. The villager then says " oh yes he is Mehmet who wears yellow boots".
The expression is often used (in the good old days) to describe people who ask for something yet they havent a clue as to what they want. But an addition to the story was the fact that the most valuable part of any cypriots dress was his boots. As you know (perhaps) boots in the old days would last more than a life-time and were handed down to sons. Turks would wear all colours but GCs would wear black. There might be different versions of the story, but this is the one I know.
Thats it.
Cheers