If you practice Taekwando, you'll probably get this fairly quickly.
In this video:
Toss - Hacky Sack Straight Leg - QR
Related:
Toss - Helicopter Center Pop Bounce - QR
Toss - Helicopter Center Pop - QR
Toss - Hacky Sack Knee - QR
Toss - Hacky Sack Knee-Leg Combo - QR