I used to play hackysack all the time as a kid and in highschool.
I have one really good memory of hackysack about three years ago. About 10 of us were playing on a big deck at my mothers house. Someone would always kick it off everytime. So you would have to walk down the stairs and get it. It would delay the game. It was happening so much that my brother(who is completly crazy by the way) said "Next time someone kicks it off the deck they have to go get it,but we all are going to try to spit on you. Once you pick it up, the spitting stops." Now it was a game! Just imagine 9 guys leaning over a deck railing trying to spit on someone! I never laughed so hard in my life. My brother called it "Spitsack" and they have been playing it ever since. Some of these guys end up covered in spit! I don't play because I always kick it off the deck. Its so gross, but so funny!