The grandchild-in-law of one's spouse's sibling.
My co-great-nibling-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-great-nibling-in-lawmug. The grandchild-in-law of one's parent-in-law's sibling.
My co-cousin-nibling-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-cousin-nibling-in-lawmug.