A fighter can challenge who ever he wants to a duel and hit any part of his opponent's body. The only rule is that is forbidden to hit a your opponent when he's down. One of the main Surma&nbsp;/ Suri customs is stick fighting. This ritual and sport is called Donga or Sagenai (Saginay). Stick fighting is basic in Suri culture. In most cases, stick fighting is a way for warriors to find girlfriends, it can also be a way to settle conflicts. On this occasion men&nbsp; show their courage, their virility and their resistance to pain, to the young women. The fights are held between Suri villages, and begin with 20 to 30 people on each side, and can end up with hundreds of warriors involved. Suri are famous for stick fighting, as their neighbor tribe, the Mursi, also practice these traditional fights.