Skip to main content
When you get a younger sibling, you have a 90% chance of the devil swapping it out with one of its minions. The other 10% of babies passed the devil's vibe check and was able to stay. These few specimens are the rare case of a well-behaved kid. If you have one, consider yourself lucky.
Kate: I have a younger sibling now!
Amy: so do I!
Kate: wtf you are my younger sibling
Amy: *sweats nervously*

Kate: The hell?! Mom! The baby's sweating, and its flooding the kitchen!
by Tired. Just. Tired. January 25, 2020
Flag
mugGet the Younger sibling mug.
A phenomenon in which parents allow their younger children to participate in certain activities that they did not allow their older children to participate in when they were that age.
This is an example of Younger Sibling Privilege: When Johnny turned 16, his parents told him he could not work toward earning a drivers license. When his younger brother, Timmy turned 16, his parents registered him for driving school.
by Stepman December 23, 2019
Flag
mugGet the Younger Sibling Privilege mug.
When the older/oldest sister of a family oftens engages in a relationship out of spite of her already engaged or further advanced younger sister. Generally moves in with her new man, gets engaged, married or pregnant all within the span of the younger's term of engagement. In the long run, not a wise decision.

Most people have witnessed at least two of these instances. General outcomes of "YSS" include but are not limited too:
1. a jailed husband (physical abuse, drugs, theft, video taping women at work, etc..)
2. A miserable 6 month marriage
3. single motherhood
4. self pity
Observer #1: "Jamie moved into her man's house, got pregnant and has quit her high paying job all since her younger sister LeAnn got engaged to her her long time boyfriend."

Observer #2: "yeah, I heard her man has a ton of great qualities like...well, umm...nevermind. At least he drives a nice truck"

Observer #1: " Another victim of the Younger Sister Syndrome (YSS)"
Flag
mugGet the Younger Sister Syndrome (YSS) mug.

younger sister

Share definition
A beautiful and cute, she can deceive anyone and everyone of her true motives
Oh that's one heck of a younger sister
by BOOM , burn March 13, 2017
Flag
mugGet the younger sister mug.

younger sibling code

Share definition
The younger sibiling shall always embarass the older sibiling and must also rat on them and tell their friends about the older sibilings secrets.
Younger brother to older brothers freinds: did you know that he has wet his bed 10 times this month? I'm required to tell you acorrding to the younger sibiling code.
The younger sibling code: the youngest sibling shot always embarrass the older sibling and must also rat on them and tell their friends about the older siblings secrets
by Bunyguy202 November 20, 2016
Flag
mugGet the younger sibling code mug.

Younger Sister Theory

Share definition
A theory that states that all younger sisters are either ugly, retarded or mind-numbingly annoying, no matter what. Sometimes, they can be a combination of these, or all three at once. These attributes are more pronounced the greater the age difference between the younger siter and her older sibling.

If the older sibling dies, the younger sister becomes neutral until such time that a younger brother is born, in which case the Older Sister Theory will take effect.

Similar to the Older Sister Theory, if there is a not-annoying, -retarded or -ugly younger sister, then one or more of the following must be true:

1. She is not blood related
2. She has a disease
3. She has addiction problems
4. She does not really have older siblings
5. You are living a lie
Example:
Guy1 "So your sister's a total twat, huh?"
Guy2 "Why would you say that?"
Guy1 "Younger Sister Theory."
Guy3 "Bitch must die!"
Guy2 "Actually, she's not that bad."
Guy1 "Dude! Seriously?!"
Guy2 "We aren't actually related, chill out."
Guy3 "Sweet! You into voyeurism?"
by Scripul April 14, 2010
Flag
mugGet the Younger Sister Theory mug.
Your sibling. The most simple-minded object on the planet. U’d give them ur liver or ur kidney but not ur phone charger. Smart.
Younger sibling means bad
“TAKE MEH KIDNEYS, TAKE MEH LIVER BUT NOT MEH CHARGER!”
“I hate my sibling, he gets away with everything
by New Dictonse May 6, 2021
Flag
mugGet the Younger sibling mug.