My example was closer to the point I was making, namely, don't joke in public with another man, especially a stranger, about your current 50+ lover's ability to get an erection.
As I've said numerous times, there is no good analogy in the context of a woman's sense of her sexual self to a man's ability to have or not have an erection-- to the link between his penis's functioning and his sense of being a sexual person. None.
No doubt your remark did not undermine anything in him, but I wonder if some teeny percent of him now does not trust you. Kind of like I read on another thread somewhere that a woman ONE TIME made a slight negative remark about the flowers her husband gave her and he never gave her flowers again.
Frankly, I think you owe him an apology for that remark.
Like I said, I have nothing else to do today except run other people's lives. I don't have any ice in my house, so I have piled on my foot a plastic bag full of smaller Ziploc plastic bags full of frozen tomato puree. That should go nicely with the leek soup that has now dried into a brown swatch on my carpet. Bf has called me several times, but each time he has had to go because his mom has called him. She's in the hospital, having had a biopsy on her spine today, and she's having her second chemo tomorrow. The only fun I get to have is telling you how to live your life. Time to put the tomato puree back in the freezer for a while.