Big-little sibling

A younger sibling who displays characteristics that the oldest should possess.

I'm the youngest of my siblings, but more mature. I'm a big-little sibling.

by Kassy Kas September 10, 2022

Scare the crap out of your sibling day

October 31 is hollowenn so get something scarey on and scare the crap out of your sibling

If your an only child do what scares you before bed then go to sleep and it will be november 1st

GUY .Hey whats october 31

Other guy. holloween

guy. NOOOOOOOOOOOOOO ITS SCARE THE CRAP OUT OF YOUR SIBLING DAY ahhahahhahahahahha

by NOT AN ONLY CHILD October 31, 2019

Half Sibling

A brother or sister that have the same mama and a different daddy...

"We don't know who mama's baby daddy is, but the little bastard's gonna be my half sibling..."

by -KTG February 14, 2008

Sibling sucker

One adult child whose siblings allow, by deferment, silence, or proximity, to assume and shoulder the predominant responsibilities of caring for an aging parent.

A sibling sucker with no time to call their own, can grow to be an angry angel.

A sibling sucker is usually performing one of the most difficult and thankless jobs on the planet.

A sibling sucker spares brothers and/or sisters of their equal responsibility which might "God forbid" interrupt their busy lives.

A sibling suckercan be one whose halo has fallen a few inches to become a noose.

by Catholic Devil May 4, 2009

sibling whore

A person on facebook who adds everyone they know as siblings. They usually have over 40 siblings and relatives listed.

Jen: Duuudee did you see Jane's facebook page? She has like fifty siblings listed and I dont even think she has ten real friends.
Bob: Whatta sibling whore!

by wadduup April 12, 2011

National Slap Your Siblings Day

A day where you get to slap your sibling(s) free of charge.

Active December 5th through 10th

Hey (Sibling) Its National Slap Your Siblings Day.

National Slap Your Siblings Day- A day where you get to slap your sibling(s) free of charge.

by otis wotis December 5, 2021

Sibling

a demon that make you want to rip your own ear off and shove it up their fucking ass

My goddamn sibling is running around the house and since she weighs 400 pounds the whole house is shaking

by waffles.and.weed January 9, 2015