What Do I Call You?

Do your stepkids call your parents by their name or a variation of Grandma and Grandpa? My stepson calls my parents by their first names.

I thought it was kind of strange for him to call them Grandma and Grandpa since they really didn't see him that much.

Now that my 3-year-old son can talk, he calls my parents a variation of Grandma and Grandpa and now it seems weird that my stepson calls them by their names.

I am not going to make SS change, but I just wondered if anyone else is in the same situation. I always wonder how I will explain to my 3-year-old why his brother calls my parents by their first names.

Also, I really have no idea how to explain to my 3-year-old why my stepson calls me by my name!