SIB 

stupid idiot boy

Lucas you’re such a sib

SIB by BigSib May 20, 2025

sib

Lead singer and bassist of the hit band Clive, playing their next gig at Madison Square Garden.

"Hey look it's Sib, she looks so pog mush"

sib by yeetitoryorteit November 19, 2025

: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 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-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

Step sib 

the friend who isn’t a brother or a sister but a step brother or sister (you don’t fuck your siblings but you’ll fuck a step sibling)

*Also called a Step Mom(my) or Dad(day)

You’re my favorite Step Sibling !

Step sib by Wreck Ralph October 6, 2017