His issue was phrasing. The woman used a euphemism which significantly shifted her perceived intentions. “Look at his little wee-wee” is far removed from “look at his little penis.” Synonyms are not created equal, so simply substituting without considering connotation will only cause confusion. He should have said “get an eyeful of her little vagina.”
I don't think I particularly want a pointy sounding word for vulva because I don't think of vulvas as pointy. I was just curious why you want a pointy word rather than a round one.
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.