Beautifully explained, Doug. Not the object (subject of your photo) but your objection to the inane comment made by a member other than myself.
In a way, it is ironic you say so much in your photo. It's context speaks clearly. But we will argue that there are some who 'don't get it' as there may be with photographs serving other purposes. Some people expect too much of their audience and some audience members expect too much of the photographs.
My English teacher, a wise and thoughtful man, would forgive me for not understanding Chaucer or Pope or Shakespeare.
"Tommy, you will understand one day. At the moment you look at the words. In the future you will look deeper and find your own words. Speak in your own words as Chaucer did. Make it clear. And if those who listen still don't get it, then and only then can you call them fools."
I think he was calling me a fool but I was never sure.
The photo is the same. We need to be educated before we fully understand. It's not wise to assume everyone is as smart as we are. There are some that will never get it. But that should not exclude them from the enjoyment of the joke. An enlightened moment is a joy for all of us.
So, Doug, please enlighten me. It looks much like a piece of the inside of a toilet flusher. I have replaced a few in my time.
xxx