Curlos called me genius, and I let him. Sheldon wanted to call me something that I can't remember, but I said no. And Chief wanted to call me missy, but I said no, so he let me choose a nickname. Now I'm called genius by some and Min by others.
Edit: Sally began calling me genius, but switched to Min after a bit.
My favourite villager wanted to call me "Shorty" but I refused it, so he let me choose my own nickname! Clearly not as fun, but it's really cute to see half of my town come up to me and say things like "How are you, My BFF?" because lately they've been asking me for permission to call me that c: Soon I will be every animals' best friend forever