The Alternative Health Zapper - arthritis One man came in, and bought a zapper. He returned some months later to buy a second one, and said “I could be a Catholic now!” I had no idea what he was talking about, so he explained - “the arthritis in my knees is gone, I could kneel with the best of them now!” OK, not how I would explain it, but humourous at least. He came back again, and bought a third one. His comment - “I loaned one to a friend, and he won’t give it back!”