X-treme Programming (XP or eXtra-Puke) is a revolutionary software development methodology in which programmers write code whilst skiing down mountains, parachuting out of airplanes, being chased by ravenous sharks with frikin laserz, or participating in any of a wide variety of other extreme sports. The quick reflexes and split-second debugging skills needed to survive in these scenarios make agility and bravery a necessity among extreme programmers.