AITA for telling my sister to expect to go to school tomorrow with no friends?

In a cozy suburban kitchen, the air buzzed with the chatter of teenage girls, but the vibe soured fast. A 17-year-old big sister watched her 14-year-old sibling, notorious for her spoiled antics, turn a fun hangout into a snack-hoarding showdown. The scene was less “sisterly love” and more like a reality TV drama, with gummy bears and movie choices sparking chaos. The older sister’s blunt words—“expect to go to school tomorrow with no friends”—cut deep, leaving tears and tension in their wake.

This Reddit tale dives into the messiness of sibling dynamics, where good intentions clash with harsh truths. Readers are drawn into the frustration of dealing with a spoiled teen and the fallout of calling it like it is. It’s a story that begs the question: when does tough love cross the line?

‘AITA for telling my sister to expect to go to school tomorrow with no friends?’

I (17f) have a little sister (14) who’s extremely spoiled. She doesn’t like to share, she hates not getting her way, and most of all, she throws tantrums when she’s told ‘no’. My parents refuse to address her behavior so she continues to behave this way. Today was the first time in years my sister had friends over to hang out.

My mom had groceries sent full of snacks they were to share. My sister grabbed most of the snacks and one of the girls wanted a bag of gummy bears. My sister said no but she had 3 bags so i took one from her and gave it to the friend. She dropped all of what was in her hand and started stomping her feet whining about wanting all of them.

My dad made me give it back to her so i gave her friend some fruit snacks instead. Then, they were looking for a movie to watch and the two girls agreed on one but my sister wanted to watch a different movie. When i told her it was only fair the girls got to pick because they were her guest and she was outnumbered, she got upset and went to tell again.

At this point both girls said they wanted to go home so my dad took them home. I told my sister as long as she continues to act this way she’ll never have friends. I told her to expect to go to school tomorrow and have no friends. She started crying and my dad said i was out of line. AITA for what i said?

Editing to include: 1, i was not peeking waiting for something to go wrong and say something. & 2, I was in the kitchen putting groceries away which is literally 10 feet away from the living room and heard her being mean to them. I was not “controlling” the remote for them either.

This sibling spat is a classic case of tough love meeting teenage tantrums. The older sister’s attempt to steer her younger sibling toward better behavior highlights a deeper issue: parenting gaps can leave kids unprepared for social life. The 14-year-old’s snack-grabbing and movie demands scream entitlement, a trait that can alienate peers. Her sister’s blunt warning, while sharp, was a wake-up call rooted in care.

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Entitlement often stems from inconsistent parenting, as noted by Dr. John Gottman, a renowned family psychologist. In a 2019 article from Family Psychology, Gottman explains, “Children learn emotional regulation through consistent boundaries.” Without these, kids like the younger sister struggle socially. Here, the parents’ leniency fuels the teen’s behavior, leaving her vulnerable to peer rejection.

The older sister’s approach, though harsh, aligns with trying to teach accountability. Data from a 2021 study in the Journal of Adolescence shows that peer acceptance hinges on prosocial behaviors like sharing—skills the younger sister lacks. Her tantrums at 14 are outliers; most teens outgrow such displays by 10, suggesting a need for parental intervention.

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For solutions, experts suggest modeling empathy and fairness. The older sister could guide her sibling by example, perhaps initiating shared activities to build social skills. Parents should set clear rules, like equal snack distribution during hangouts. Encouraging open dialogue about feelings can also help the younger sister grow, fostering friendships rather than fights.

Here’s what the community had to contribute:

The Reddit crew didn’t hold back, dishing out a mix of cheers and reality checks for the big sister’s bold move. Their takes are spicy, candid, and packed with that classic online flair:

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riblz11 − NTA.. Your parents are turning her into a monster. They might force you to deal with it at home, but they can't force people outside of the family. She's going to be friendless.

iMESSupCOMMONphrases − NTA. If your dad can't properly parent her, you are more than welcome to.. You and her friends will show her that her behavior has ripper cushions.

browngirlyang − Going with NTA. Maybe you could've phrased it better. I hope your parents see that your sister needs help. Having those kind of tantrums at 14 years old isn't normal anymore.

I_exist_damn_you − NTA and she'll have to learn the hard way

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withchesghost − NTA, you're a good sibling for trying to warn her. If you hadn't told her she would have to find out in an actually painful way. Her crying because you said that is weird because she should have noticed that after you tried to get her to share,

and after you told her her friends should pick the movie because they are guests, and then having them leave, and THEN you saying she wouldn't have friends if she acted like that.. 14 year olds aren't that oblivious. That's like 10 year old behavior

randomnessaa − NTA. I had to go back and look at her age. She is acting like she is 4 not 14.

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mythoughtsrrandom − NTA someone should have been checking her behavior long before this. You’re doing her a favor. Could have been worded better but you did her a favor.

[Reddit User] − NTA. I mean you’re not lying. No one would want to be around entitled behaviour. You’re a good sibling for telling her that because sometimes younger siblings need to be told the truth of things.. Wait, wait, wait…she is 14 and throwing tantrums??? Why are your parents enabling this? She is 14 not 4

KKTide − NTA. WOW your little sister is spoiled and you are correct about not having friends. She is also going to be gossiped about and made fun of. She is in for a terrible school experience. Your parents are at fault for allowing her to grow up to be this way. What is amazing is how two children from the same home become to such different people. Sleep good knowing you tried to help her learn to be a decent person.

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Wickedsymphony1717 − NTA you're being a good sister and better parent than your father.

These Redditors rallied behind the older sister, applauding her for calling out behavior that could tank her sister’s social life. Some pointed fingers at the parents’ enabling, while others chuckled at the 14-year-old’s toddler-like tantrums. But do these hot takes capture the full picture, or are they just fueling the family fire?

This tale of snacks, tantrums, and sibling showdowns shines a light on the tricky balance of guiding a loved one while keeping it real. The older sister’s words were tough, but they came from a place of wanting better for her sibling. Navigating family dynamics is like walking a tightrope—lean too far one way, and feelings get hurt; too far the other, and bad habits fester. What would you do if you found yourself in a similar situation?

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