jiggle dance 

n: a dance in which an overweight male will shake his gut by grasping it firmly with both hands and waving it in a clockwise motion. This is usually accompanied with a leap from left foot to right foot and vice versa, as well as the optional singing of "The Hamster Dance" in slow motion.

When Janitor Bud started his jiggle dance, everyone in the lunchroom lost their appetites.

jiggle dance by Scott May 1, 2006