Questions involving someone's grandmother or grandfather, either biological or legal, and interactions between them or also interactions between yourself and one of them. Can also be used for interactions with someone else's grandparents.
Grandparents are the parents of your own parents, and are part of your family. Grandparents can also be commonly referred to as:
This tag should also be used with the family, if them being family also plays a role in the question. Furthermore, this tag should be used with context of the situation you're in, such as party.