All my kids and 5 of my sisters boys call my parents grandma and grandpa. The 6th boy and my other sisters daughter calls my parents Nana and Papa.
When I was old enough to talk, I called my grandma....grandma...BUT....I called my grandpa Curly!!!! Because he had curly hair and looked just like the one guy on the 3 stooges (the one that is bald on top and curly hair around the sides and back cant think of his name right off hand)
If and when I become a grandma, I would love for my grandkids to call me Granny or Grandma but I would be happy with whatever they were to call me as long as they don't call me late for supper.
)) lol