Set up a private match, any game mode, select prison map with a guest signed in or with a friend. Before starting the match press to change the game setting. Go to custom weapon set and select magpie, sneakers and nuke to be the only power-ups to spawn. Also use the Speed perk on your character to help you out. The magpie will only chase you if you are holding a power-up in your hands. So start by picking up a nuke and sneakers, have the second player throw a magpie. Now start to run around in big circles while holding the nuke and using the sneakers to help you run faster. The magpie last about a minute.