hackie sack - The best way to waste time, especially when you need to get

The best way to waste time, especially when you need to get out of doing work or chores.

My teacher caught me hackie sacking during class and said I was the worst student ever.

I used hackie sack to avoid doing my math homework. It worked, sort of.

I played hackie sack with my friends during recess. We forgot about school altogether.