Get the great-great-great-grandniblingmug. Spouse's grandnibling's spouse.
My co-grandnibling-in-law is a good person.
by Gerald128 April 7, 2021
Get the co-grandnibling-in-lawmug. 
Get the grandniblingmug. 
Get the half-great-great-grandniblingmug. Spouse's grandnibling's spouse.
My grandnibling-by-marriage-in-law is a good person.
by NSBC968755 February 25, 2023
Get the grandnibling-by-marriage-in-lawmug. Half-sibling's great-great-great-grandchild.
My half-great-great-great-grandnibling is a good person.
by Seo48787 October 28, 2021
Get the half-great-great-great-grandniblingmug. 
Get the co-grandnibling-in-lawmug.