I used to see a Mistress would put me in a standing spread eagle position. She would attach a pitcher to my balls and gradually fill it up. I was made to swing the pitcher back and forth through my legs. She mixed in sharp snaps of her whip. Trying to focus on keeping the pitcher swinging, taking her whip and pausing when she snapped her finger so she could add more water was mind blowing. It was beautiful overload, not to mention she was easy on the eyes. The entire experience was humiliating, humbling the feeling of being completely exposed. From a slave's stand point, I can definitely understand the two types of play fit together.