A maneuver where a male pulls his pants down while in a standing position (generally to the ankles), lifts his shirt with one hand, and expeditiously thrusts his hips back and forth in a swinging motion. If done correctly, the thrusting will swing his "member" into contact with the abdomen on the upswing, and the leg or anus on the downswing, thereby creating a "clacking" sound. It is recommended that this act be augmented by pouring a beer over the crotch with the free hand to accentuate the clacks being generated.

When you eat dirt for the first time and leave your family to build a shack in the woods