by Stupid Af July 4, 2021

Organizations that pair young kids with older "brothers" & "sisters". They spend quality time together & it makes up for not having a Mom or Dad. Great for youngsters!
by Starchylde May 21, 2016

by Your Secret Urges August 12, 2018

When you have always been the one to pick on your siblings with no consequences... and therefore as an adult shamelessly poke at others even when you shouldn’t. Specially when an adult female poked fun and teases others because they never had an older sibling to put them in their place.
My girlfriend won’t stop trying to tickle me when we cuddle and finds it funny. It’s like she has big sister syndrome. Little does she know what’s coming!
by Bigsistersofurban February 9, 2021

by Bellerrrrrr December 3, 2019

So-called 'second mother'; glorified slave of their younger sibling (especially if it's a brother)/parents
by Hello-553669 April 19, 2025

A big sister is a little sister that has grown up, and is no longer capable of collecting Adam from corpses. They are in a deep sea diver suit, just like a Big Daddy. They are able to use Plasmids, and have a large needle to take Adam and transfer it into themselves.
by n_u_m_l_o_k September 29, 2020
