I have a sister that's 2 years older than I.
When I was about 3, I caught up to her and was as tall as she was. People would think we were twins and would sometimes come up and ask "What's your name little girl?".
I, as a Russian boy, was very offended by that, I think I remember crying and telling my dad about it, so he came up with a solution for me.
Next time someone asked "What's your name little girl?" my answer was "Stasik", in the deepest voice my little vocal cords could muster.