Hackey Jacking
When you take your hackey sack and slap it against your own face like you're trying to wake up a dead man.
I tried hackey jacking during my lunch break and it felt like I was being hit by a bag of bricks.
My friend did hackey jacking in front of the whole class and got sent to the principal's office.
I hackey jacked so hard I woke up my dog, who then bit my leg.