They have a unique tradition called Imbalu; a circumcision ceremony where boys are initiated into adulthood. Although, it is much more than that. In this peculiar form of circumcision, special knives are sharpened and used to cut the initiate's foreskin where a crowd is there to witness. It is taboo if the boy displays any form of emotion as he must remain calm. The videos will provide more answers. They also have an interesting oral narrative that I will post when time permits. Erhverh or not, I find this uncanny to the "Joshua" form of circumcision. "2 At that time the LORD said unto Joshua, Make thee sharp knives, and circumcise again the children of Israel the second time. 3And Joshua made him sharp knives, and circumcised the children of Israel at the hill of the foreskins. 4And this is the cause why Joshua did circumcise: All the people that came out of Egypt, that were males, even all the men of war, died in the wilderness by the way, after they came out of Egypt. 5Now all the people that came out were circumcised: but all the people that were born in the wilderness by the way as they came forth out of Egypt, them they had not circumcised. 6For the children of Israel walked forty years in the wilderness, till all the people that were men of war, which came out of Egypt, were consumed, because they obeyed not the voice of the LORD: unto whom the LORD sware that he would not shew them the land, which the LORD sware unto their fathers that he would give us, a land that floweth with milk and honey. 7And their children, whom he raised up in their stead, them Joshua circumcised: for they were uncircumcised, because they had not circumcised them by the way. 8And it came to pass, when they had done circumcising all the people, that they abode in their places in the camp, till they were whole. 9And the LORD said unto Joshua, This day have I rolled away the reproach of Egypt from off you. Wherefore the name of the place is called Gilgal unto this day."