Sib Sab 

Taken from the words sibling and sabatical; occurs when two siblings take a break from communicating with each other because of too much time spent together or because typical sibling turmoil is wearing them out.

I'm so tired of my sister's whining and complaining about all of her personal issues. I love her, but we seriously need a sib sab for a few weeks.

Sib Sab by Indy Sparkplug May 13, 2010

Sib-Snitch 

When you tell your sibling to ask your parents for something you want and you hear them use your name.

"Tyler go ask mom for Mcdonalds"
"Ok"
*goes to mother*
"Mom, Ashley wants Mcdonald's"
*goes back to Ashley*
"Dude! you totally Sib-Snitched!

Sib-Snitch by Jazz J June 17, 2016

Sib 

Short for sibling. Brother or sister, mostly for borthers.

Yo, Sib. Mom just said I'm her favorite

Sib by daVirgo June 23, 2005

:Sib 

When you're so (either sad or happy) that too many tears are covering your eyes and you can't spell :sob :

"guys I just ate some baby puffs"
"Oh my fukcingh god :sib"

:Sib by Gonald June 14, 2021

Sib 

Your biological sibling. Brother, Sister, or other.

"Your painting of elvis in a dress looks fantastic, sib."

Sib by LuridHope May 25, 2021

sib-friend 

when a friend becomes fully integrated into your family

when sib-friends talk to each other: how's mom doing?
...imma live in your basement

sib-friend by mox+gam November 29, 2020

sib 

short for Suck It Bitch

bob: joe you're an idiot
joe: SIB

sib by mTk July 24, 2004