16yo (soon 17) still insists on Daddy and Mummy, merrily in front of all of his mates and girlfriend. When asked whether he is self conscious about it he says “that’s just what you’re called, it’s no big deal to anyone.” Given he is 6ft1 and I’m a meagre 5ft8 and he’s physically superior to me in just about every way, I’m not arguing 🙂
Helps that he has 8, 11 and 14 year old brothers too who are still in the daddy mindset (though I can see at least one of them wanting to change up to dad so they fit in with their friends – as I did aged about 14. I can still remember asking parent’s permission to move away from the “childish” mummy and daddy that I used up to that point).