A classic guido move, newly popularized by MTV's show, The Jersey Shore. Typically involves a juiced up, overtanned, pit-stained arm pumping rapidly and enthusiastically in response to a variety of stimuli, including but not limited to: slammin' beats, hot sluts and other fist pumpers.
The fist pump is a celebratory gesture in which a fist is raised before the torso and subsequently drawn down and nearer to the body in a vigorous, swift motion. The fist pump is sometimes carried out in parts of the Western Hemisphere, Europe, and Japan (where it is known as guts pose) to denote enthusiasm, exuberance, or success and may be accompanied by a similarly energetic exclamation or vociferation. The gesture may be executed once or in a rapid series.
When dancing in a club, fist pumping should start from having the hand quivering near the ground. But when the musics beat come in, raise you arm. Rather moving your arm in the hinge joint direction, the fist pump move moves at the shoulder and powered with the fist.