Vigorously swinging your sides back and forth so that your Nuts and Johnson slap against your stomach as well as your grundle, emulating an angry ape moving through woodland floor. Based upon the size of your cock, it may be either known as swinging monkey or an ape. Whatever the case can be, it should be frustrated. This motion is usually done to a roommate, teammate or simply someone that cut you down on freeway. Even though this action might be hazardous to the wellness of your nut sack, it is heaps of enjoyable and may switch any situation into a nut slappin comedy hour! WARNING: Attempting this work on a moving vehicle needs practice and control. Please practice in front of a mirror first before releasing the fury regarding the Ape in public areas.