My coworker Mike was a brilliant guy, I worked with him for 25 years. He had never married, and his social life/skills were extremely limited. He was known for saying some really off-the-wall things. He was particularly nervous around women, or even talking about women.
In the 90s, the USAF decided women would be permitted to fly in combat, including flying single seat fighters. This decision required us to look into what personal quipment already in the inventory was usable by women, and what wasn't. The most glaring need was to develop a means by which our female aircrew could relieve themselves on long missions, their equivalent of what were known as "piddle packs" used by males.
Our boss convened a brain storming/planning meeting to discuss the way ahead, there were 4-5 of us there, all men. Our boss kicked off the discussion giving a very top level synopsis of the issue, including short and long term goals. He then opened the floor to brainstorming.
Mike spoke up first, and said something like, "Well, there are significant differences between men and women, and how they go to the toilet. Men have parts women don't have, do you understand?"
My boss looked up and said, "Mike, I've been married 28 years and I raised three daughters. I know the difference between men and women."