It's an age old practice that has led to some of the boy dancers being turned into sex slaves by wealthy and powerful patrons, often former warlords, who dress the boys up as girls, shower them with gifts and keep them as "mistresses." Afghan police are battling to crackdown on the practice which has angered Islamic clerics who say those involved should be stoned for sodomy, forbidden under Islamic law.In a society where the sexes are strictly segregated, it is common for men to dance for other men at weddings in Afghanistan. But in northern Afghanistan, former warlords and mujahideen commanders have taken that a step further with competitions for their dancing boys. "Every boy tries to be the first. They are dressed in women's clothes, have bells on their feet and have artificial breasts," said Mohammad Yawar, a former mujahideen fighter against the Taliban and resident of the northern town of Pul-e Khumri.