octuple-3C
An octuple-third-cousin is someone you're related to but don't know how. You have two parents, four grandparents, eight great-grandparents, and sixteen great-great-grandparents in common. That's more people than your family should have.
My octuple-third-cousin sent me a message that said, 'We have 16 great-great-grandparents in common. Let’s get a family group chat and finally figure this out.'
At the family reunion, my octuple-third-cousin asked, 'Why do we have so many great-grandparents? Do we all just have too many ancestors?'
My octuple-third-cousin called me and said, 'We have 16 great-great-grandparents in common. Let’s get a DNA test and see if we’re even related anymore.'