Two individuals (or more) who are related that participate in sexual activity together.
Bernard: Did yall hear about Beatrice and Benny? They were at the family reunion making out!
Billy: Sick Bastards! They're kissin cousins!
Seventh-cousin-seven-times-removed (7C7R).
My seventh-cousin-7X-removed is a good person.
1- Child of their parent’s full sibling with the other parent’s half-sibling.
2- Person who, in relation to the other person, has zero parents and three grandparents in common.
3- Sesqui-first-cousin.
4- Sesqui-1C.
My sesqui-cousin is a good person.
A child of a parent's half-sibling with the other parent’s full sibling; the relative who has with the other person only three grandparents in common, but parents are different.
My sesqui-cousin is a good person.
Child of their parent’s half-sibling with the other parent’s full sibling. Has among themselves; different two parents, three grandparents in common and different one grandparent.
My sesqui-cousin is a good person.
Child of their parent’s half-sibling with the other parent’s full sibling.
My sesqui-cousin is a good person.
Son of their great-grandparent’s full sibling with the other great-grandparent’s full sibling.
My double-great-cousin-uncle is a good person.