Yeah, some people get as much gratification from just viewing it in a voyeuristic fashion as they do from actually performing the act, so good for you. It is good to expand your personal horizons, or in your case...maintain the borders of what you already have. I bet your cache is very interesting.
Actually it was a grainy B&W photo I saw back in 1965. Frankly, I didn’t know for sure what was going on...