Your grandma's grandmother. It's a family member in your family
tree that you'll
see at a family reunion, and
will have no idea who they are. Then they'll go up to you and tell about how they used to change your diapers, and
ask if you remember them from when you were a microcell. They get offended when you say no. ✌🏼
Great-Great-Grandmother -> Great-Grandmother -> Grandmother -> Mother -> YOU -> Offspring -> Grandchild -> Great Grandchild -> Ect