The act of firing 3 rounds of a semiautomatic/automatic gun usually to the target's head or heart in very fast succession. This shooting technique is most effective when the target is still. Similar to the "double tap", the triple tap is used to inflict maximum destruction to the target before he/she has time to move or run. Typically used more often when one is in possession of a lower caliber weapon to ensure stopping power. For instance, a .50 desert eagle would not require this technique. (as a single bullet in the arm with a .50 would likely amputate the limb).
Boss: Well Anderson, how did the mission go?
Agent: Great Director, I busted in the place and seen that there was only one terrorist within sight... I wasn't really worried about ammo at that point so I triple tapped that sand nigger right between the eyes and he dropped like rock!! His brains were painted all over the wall boss, it was a hell of a sight!!
Boss: Great job Anderson, keep your performance up and you'll have a raise in no time!! Now go fetch me a coffee, BLACK!!