Once upon a time in the dark ages (we like to call that the sixties, children), some nimrod came up with what he thought would be the "new toy craze". Obviously inspired by hula-hoops, the toy industry gave us....the SWING WING.
"Hey kids, who wants a big case of neck strain and whiplash? How about you, little Johnny?" *grin* "As an added bonus kids, you get to look like a total douche when you are using this innovative product!"