A sign that reads "Shock" is seen on the field used for an Ultimate Tak Ball game in Bangkok March 2, 2012. The rules are simple: throw a ball into the goal to score a point. But what makes this game unlike any other is that all the players are armed and ready with stun guns. Each game of Ultimate Tak Ball consists of three periods, with two teams of four players each. Any player in possession of the 24-inch (60 cm) medicine ball is open to unlimited shocking by the players on the opposite team. The stun guns pack 3 to 5 milliamps of electricity, about 10 percent of the power of the taser stun guns used by police. Picture taken March 2. REUTERS/Navesh Chitrakar (THAILAND - Tags: SOCIETY SPORT)