When talking to your kids about their grandparents... do you refer to them as?

Grandma and grandpa. And my grandma is great grandma, of course. I had to add that because she gets mad props for sticking around so I could introduce the most important person in my life to my girl. 84, she doesn't act a day over 60, she's still going strong, and still a lot of fun for an 8-year-old to visit with.