Repulsing the Monkey is a Tai Chi maneuver. Formally called Step Back and Repulse Monkey, it has been elegantly explained, on www.taichido.com: "The posture implies the gentle application of energy. Success lies in retreating because you refuse to use strength against strength. Retreat and then wait for the right time to counter-attack."
To find out who's Repulsing the Monkey in a shot-and-beer bar in Pittsburgh, and why, you'll just have to see the show... Tickets are moving well but still available at: http://www.brownpapertickets.com/event/2002157.