1)Non-symmetrical (width and depth), and is chunky,lumpy and purely unappealing.
2)jiggles and shakes like jello with ease by using only the slightest step or hip/waist pop
Person 1)Hey,did you see that person's huge ass?
Person 2) Yeah,she has a real Wacker Neuson on her,that thing shakes!
The nickname given to any member of a sports team who neglects to wear fitting boxers or compression shorts and proceeds to participaate in jumping jacks. Their neglecence results in a the very noticable flopping motion of their package as they continue jumping.
You: yo man aint u trippin about forgetting ur compression shorts for practice
Friend: na its aight dude I'll just wear these loose boxers You: But we doin jumpin jacks right now, dude ur dick is floppin everywhere. Ur a wacker jacks forreal