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!
-Who?
-Jessica!
-No way, I did her last month. We're oil siblings!
by Oyster Lover February 1, 2016

When someone is overconfident about something so blindly but in the end the reality teaches him / her the exact opposite and shows what a total retard he / she used to be or maybe continue to be.
You’re so sibling
by Mima40 July 28, 2021

They're the best siblings in the world, like the Oxford dictionary said "Lee Siblings : the best siblings. If you want to call your siblings goals, use Lee first."
by Jejujo July 10, 2017

The most disgusting people you'll ever meet in your life. You cannot get rid of them. You meet them by being born.
by Alexander Hamilton 1789 April 23, 2023

As we all know WCW or MCM we now have SSS (Sweet Sibling Sunday). This is a day where you post your siblings high or low, goofy or not... we dedicate this day to our siblings :)
by Clingyness I diss October 18, 2020

by JikookArmy June 25, 2019
