What is the real way to do the kung fu flip in gears of war 2?

Ok, i have seen countless videos on how to do the gears of war 2 kung fu backflip ive seen like mostly jedi pimps videos and my friend told me that only jedi pimp and his friends know how to do the glitch but does anyone know the real way to do the gears of war 2 kung fu flip|||he was using Action Replays, dont listen to him