The Mitchell Johnson-Kevin Pietersen incident happened during fourth Ashes Test held at the MCG. It was the 53rd over of the second England innings when Johnson completed his run-up only to see Pietersen walk away from the stumps at the last moment. The English batsman was disturbed by something behind the bowler's arm but Johnson was not pleased. The speedster threw the ball in frustration and exchanged a lot of pleasantries with the right-hander. Watch what happened.