siblial 

relationship between siblings

person 1: I heard john and megan got married.
person 2: I thought they had a siblial relationship...
person 1: They are from Alabama

siblial by pacman man February 27, 2020

Siblical 

When something happens violently or saltylike between siblings

Gerald hit Timmy on a siblical proportion.

Siblical by JCeaser July 15, 2019