Guardian
Black Belt
I had a couple of examples of some bronze rings designed for fighting that were estimated to be over 2,000 yrs old, so fighting with rings on is not a new experience. Both rings were small and the decoration was a pyramid of bronze squares ending is a small square.
When I was younger it was common to wear one or two large rings. Instead of punching with them we would turn them so that the face of the ring was inside on the palm side of the finger. A deliberate slap across the forehead to cause blood running into eyes was the most common seen tactic with a second favorite going for the ears and trying to take chunks out of them.
Today I advise my friends and students especially females that when they are getting that gut feeling that something is not right to turn the rings as they are leaving the area. It can be done usually with the same hand thumb and not usually noticeable. It helps to hide valuables and turns what is an instinctive response (slapping) into a more effective tool.
Brian King
Amen - Slapping someone has a bad effect on them, they are not expecting it, takes most by complete surprise and then it's up to you what to do next, get out, commence the butt whooping or maybe it just ends there.