My 12 yr old Jake has always called me Grandma Rhonda like the rest of the kids. But this last time he visited he was teasingly calling me Grammie and Grams and Gma. As long as it isn't Granny I am fine! LOL
I do have one 6 yr old DGS who used to insist on calling me Rhonda and not Grandma Rhonda. He now calls me Grandma.