half-sibling-in-law

Spouse's half-sibling or half-sibling's spouse.

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

by Rwopazaq November 24, 2019

Dang’s Law

As long as your girlfriend is the last person you’ve slept with you haven’t cheated.

Person 1: Mate didn’t you sleep with Sarah?

Person 2: Yeah but I slept with my girlfriend today so according to Dang’s law I haven’t cheated.

by Name Guru January 15, 2022

stepadopter-in-law

Spouse's stepadopter.

Stepadopter-in-law.

by Jenword May 20, 2023

stepgrandchild-in-law

Stepgrandchild's spouse.

My stepgrandchild-in-law is a good person.

by Wonbig October 13, 2021

co-cousin-nibling-in-law

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

Saleem's Law

Any long-running chat window will eventually feature a definition from Urban Dicationary

That last meeting definitely followed Saleem's Law

by pseudonym-12947015 February 24, 2017

Milo Murphy's Law

Final Destination for kids

milo murphy's law sucks bruh

by Geometry dashing June 29, 2025