According to Wikipedia, “hacky sack” got its name in 1972 by John Stalberger and Mike Marshall, the inventors of the Footbag. A game of hacky sack generally consists of two or more players kicking the footbag to one another, and in fact using any part of the body except the hands.
9(MDAxODM0MDY4MDEyMTY4NDA3MzI3YjkzMw004))