by TaiLopez'sBookshelf July 26, 2016

Sib is a very Big Mac fatty, she likes to eat 5 hungry jacks bqq cheese burgers an hour and complain that Indian food smells like Indians, she also likes soggy biscuits and many other soggy things
by Sib July 3, 2018

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
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

Short for sibling. Instead of saying bro or sis to a close person/relative, you can use this gender neutral word.
by TheRealSlimFati August 18, 2023

by dick fingers January 15, 2023

Acronym for "Should I buy"
Used in forums like Reddit as a subject header to ask what is mentioned in the body of the message is worth buying.
Used in forums like Reddit as a subject header to ask what is mentioned in the body of the message is worth buying.
SIB Magic Bullet blender/food processor?
Yes, you should buy it, its very handy and useful, without taking up much space.
Yes, you should buy it, its very handy and useful, without taking up much space.
by Ulfsark July 1, 2017
