half-great-great-great-nephew

Half-sibling's great-great-grandson.

My half-great-great-great-nephew is a good person.

cousin-nephew

First cousin's son.

My cousin-nephew is a good boy.

eskimo nephew

When two guys fuck the same girl and she's has a kid with one of them

I have 10 Eskimo Nephews

double-first cousin-nephew

Son of their maternal first cousin with the paternal first cousin or double-first cousin’s son.

My double-first cousin-nephew is a good person.

half-great-nephew

Half-sibling's grandson.

My half-great-nephew is a good boy.

half-great-nephew

Half-sibling's grandson.

half-great-nephew.

half-nephew-in-law

1. The son-in-law of one's half-sibling.
2. The son of one's spouse's half-sibling.

My half-nephew-in-law is a good person.