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
Get the Sibmug. A gender-neutral alternative shirt for “sibling” and can substitute for the words “bro” and “sis”. This term can be used with friends as well as a term of endearment.
Heyyyy sib, how’ve you been? It’s been forever!
My friend is NB so I refer to them as sib and they love it.
My friend is NB so I refer to them as sib and they love it.
by LingDanc803 October 21, 2022
Get the Sibmug. The most hated Sunshine Island Bus Simulator bus line. R148 is a marathon shuttle operated by FTCC and REBC. It is the most hated route as it always appears on the daily challenge. Making players drive this route all the time and not having a chance to get other daily challenge routes that are more meaningful.
SIBS Player A: Heck nah, today's daily challenge is SIBS R148
SIBS Player B: NO WAY!!! When can I get to play N246, R370... It's been 3 consecutive days off R148
SIBS Player A: Addi should go run a marathon every time this route shows up. Who needs so many marathons, and it doesn't need to be SIBS R148 every time when there is one
SIBS Player B: NO WAY!!! When can I get to play N246, R370... It's been 3 consecutive days off R148
SIBS Player A: Addi should go run a marathon every time this route shows up. Who needs so many marathons, and it doesn't need to be SIBS R148 every time when there is one
by mlruc September 10, 2024
Get the SIBS R148mug. by TaiLopez'sBookshelf July 26, 2016
Get the SIBmug. 
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
Get the Sibmug. 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
Get the SIBmug.