hacksterbating
When you show off your hacky sack skills like you’re the king of the sack and everyone else is just there to watch you fail.
I did a triple flip and landed like a sack of bricks. You should’ve seen it.
He tried to do a backflip and faceplanted. Classic hacksterbating.
She did a combo and then dropped the sack. It was like a slap in the face.