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

half-sibling-in-law

1- Half-sibling's spouse.
2- Spouse's half-sibling.

half-sibling-in-law.

by Simaduria July 27, 2024

Eldest sibling syndrome

Eldest sibling syndrome or E.S.S is When you are the eldest amongst your siblings so you automatically fall into the cycle of having to use things until they are disintegrating because you can't ask for new ones.

Whereas on the other hand any younger sibling can ask for whatever and get it instantaneously because they are not the eldest.

Examples of this include tattered clothes and using things until they break.

Person 1: Dude. Your underwear is literally hanging by the elastics. Why don't you get new ones?

Person 2: Oh you know why. Ask my little brother.

Person 1: No wait. Don't tell me you have Eldest Sibling Syndrome!?
Person 2: It's gotten worse

by Mad King JJ July 29, 2017

Oil Siblings

Special bond between a guy and a girl created after both of them have had, alternatively or simultaneously, sexual intercourse with the same girl.

-Hey, Monica, guess who I tapped last night!

-Who?
-Jessica!
-No way, I did her last month. We're oil siblings!

by Oyster Lover February 1, 2016

three-quarter-sibling

1- First cousin and half-sibling at the same time.
2- Child of mother and of uncle (father's brother) at the same time.
3- Child of father and of aunt (mother's sister) at the same time.

Three-quarter-sibling.

by Jazigurn October 28, 2024

sibling-in-law

1. The spouse of one's sibling.
2. The sibling of one's spouse.

My sibling-in-law is a good person.

by Elivaldeq November 24, 2019

half-co-sibling-in-law

Spouse's half-sibling's spouse.

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

by Wonbig October 13, 2021