He had me lean over the back of the chair and hold onto it...

He had me lean over the back of the chair and hold onto it with my hands underneath the seat. He hit me once and I cried. He let me be for a while. Then he said, 'If you don't hurry up and move your hands, I'll break your finger.' By the fourth or fifth time I didn't feel it anymore, but each time it was hard enough to move my chair forward.