This thread made me think of my Grandpa. We called him "Granddaddy". I never knew my biological Grandfather. Grandaddy was Mimi's second husband - my Dad's stepfather. My biological Grandfather died before I was born so "Granddaddy" was the only Grandpa I ever knew.
I loved him. He had diabetes and Mimi gave him Insulin shots. It used to scare me to death! I'd cry and run hide until it was over. He said it didn't hurt but I'd be mad at Mimi briefly.....till it was time to eat or she gave us a treat of some kind!

I sure do miss them.