It was in the days of Caravans across the blazing sands when Horses used to talk in the language of Man.
Young horses were not named until they were at least two years of age, when their characters could be measured and quantified. Until they reached that time they were simply known as 'Os'.
It was in this time that a Caravan set forth across those sands and amongst them was a Mother, Father, 3 year old and 1 year old horse.
The Father was set the task of leading the long trail of wagon pulling Horses and Camels, for he was wise and knew the sand well. And he was pleased. Mother was loaded with all manner of goods, including three bolts of cotton and a pan destined for the grand Caliph of Cairo. The 3 year old (Known as Hugertya in the language of horses - although that term does not translate well into the language of humans.) was given charge of two bolts of Linen and a water gourd. 'Os, the 1 year old, was given a roll of silk to carry as he was youngest.
After some miles had passed 'Os began to complain to Hugertya that the silk was far too heavy and he needed someone else to carry it. Hugertya asked father if he could, but of course Father could not as he was leading the whole caraven. 'Os asked if Hugertya would carry it but Hugertya felt he could not.
This left only Mother. 'Os asked if his Mum would help but Hugertya, on seeing how his Mother carried an immense weight already, could only respond -
Sorry, 'Os, 'ar Ma's bin laden with enough stuff already.
And so, in years to come, the Taliban authorities quoted Hugertya's words. Osama bin Laden is carrying enough responsibilty already - we do not wish to add to that burden...
Sorry, best I could come up with at short notice:-)