Sib

Short for self injurious behavior. Similar to sh (self-harm) except sib is doing something that hurts themselves, but isn't meant to inflict harm. But sh is trying to inflict harm on themselves.

Me: when I was younger I used to sib
Person: what's that?
Me: something I did to hurt myself but I didn't mean to
Person: isn't that sh?
Me: no I didn't do that until later in life, my sib was hitting my head when I didn't get my way

by That_Trans_Guy_Denki May 18, 2022

Sib

Gender-inclusive term of endearment used among anyone who loves someone else in whatever capacity (platonic, familial, romantic, etc.). An alternative to "bro" or "sis".

Person A: Hey... *thinks* wait I don't know their pronouns *thinks* sib, what's up?
Person B: The sky lmaooo :P

by I Am Princess X June 20, 2020

sib

You could call your friend sis or bro, but what about sib? It’s rEvOlUtIoNaRy!
bro= brother
sis= sister
sib= sibling
It’s great for ur non-binary pals

a: I just got a sugar daddy
b: Yesss, get it sib!

by iamitSIB December 24, 2019

Sib

Self Improvement binge

I was going out to the old port too much, but then got tired of being pathetic, so I started a sib.

by Pahey12345 December 11, 2011

SIB

spontaneous involuntary belching

excuse me, I got that SIB.

by Crawton March 8, 2024

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"

by yeetitoryorteit November 19, 2025

SIB

Stupid Idiot Bitch

Corryna won’t get pitchers with us because she was to work tomorrow…what a SIB

by dick fingers January 15, 2023