Smelly feet

At what age do children stop embarrassing their parents? At some point the tables turn and parents become embarrassing to their children instead of the other way around. Is that right?

We were on the train this afternoon and someone with smelly feet removed their shoes. Daniel spent the next 5 hours (slight exaggeration) saying very loudly, “Yuk, who has stinky feet? I can smell someone’s smelly feet ….” or words to that effect over and over again.

I probably shouldn’t complain since I think it highly likely I’m still a source of embarrassment to my own parents.