Zuncle

A noun usually referring to men. "Zaunty" for women.

1) A hot person with a nibling

2) Any person who has a zephew (zaddy nephew) or a ziece (zaddy niece).

Reilly: I'm grateful for my Zuncle Jonathan

Whitney: Zuncle?

Reilly: Yeah. You never hooked up with like a hot person with a nibling?