From the Treefort notes: He came back! We had a great time. This session is the second time I've done the ball-torture thingy on Redplusplus (though I've been doing it since the late 80s, with variations). This is the first time I've ever photographed it. It really is pretty cool. It's basically a "Chinese Finger Trap" for the nuts. As I pull on it, the bamboo hard parts contract against the nuts, compressing them unevenly and agonizingly.