Newfane Cousin
Newfane is a small town in Niagara County, New York, and the citizens of this fine town have a habit of referring to family friends/acquaintances/neighbors as their "cousins", "aunts", or "uncles"; when no blood or marital relation exists.
Someone: "My cousin/aunt/uncle is coming into town this weekend and we're having a party."
Me: "Is it your real cousin/aunt/uncle, or is it a Newfane cousin/aunt/uncle? "
Me: "Is it your real cousin/aunt/uncle, or is it a Newfane cousin/aunt/uncle? "