No word feels great which is pretty sad considering how many child-friendly euphemisms there are for a penis. With my daughter we try to emulate the same vibe as ‘willy’ combined with some anatomical accuracy by using the word ‘vulvy’. Sounds gross to many, makes sense to others. Your mileage may vary haha.
Pretty sure this is exactly correct. I read the Kurzgesagt book Immune recently and it was a fascinating view into how our bodies are really the result of ancient warfare, with constant oneupmanship between us and the environment.