AITA for bursting out laughing when my SIL asked to live with us?

The air was thick with tension at a family gathering when a woman’s sharp laughter cut through the room. Her sister-in-law, known for relentless jabs at her weight and parenting, had just dropped a jaw-dropping request: to move into their home with her kids, leaving behind free rent and childcare at her parents’. The audacity was too much, and the woman’s chuckle escaped before she could stop it, followed by a firm “no way.”

Shock rippled across the faces of her in-laws, and her SIL’s verbal attacks erupted, proving old habits die hard. The woman whisked her kids to the car, but her husband wasn’t thrilled, wishing she’d let him handle it. Was her laughter a justified jab at an entitled request, or a misstep that stirred the family pot? This tale dives into toxic ties and standing your ground.

‘AITA for bursting out laughing when my SIL asked to live with us?’

For the sake of not writing a huge post I’ll just say my SIL have a very tense relationship. She’s a very hateful, mean person, constantly takes digs at my weight, tells anyone who will listen that I’m lazy and fat, a bad parent, and not good enough for her brother.

I let it roll of my shoulders for the most part because frankly her opinion of me is pretty much irrelevant and I have my own opinions on her but keep it to myself. Not saying anything if I don’t have anything nice to say and all that.

This weekend when we were over at his parents house where she also lives, she sat us down and said she wanted a change from living with their parents (where rent is free and endless childcare is provided by my MIL) and started thinking it might be a good idea to move in with us.

I couldn’t help it, I immediately started laughing. The entitlement and audacity honestly took me off guard given the fact that my mutual distaste for her is not a secret even if I stay cordial to keep the peace. Everyone looked at me in shock and since the damage was already done I said “that’s not happening and you know that.”

Since she’s the person she is she immediately started her verbal attack, pointing out all of my flaws and classy things like that. Why not behave that way in front of the kids? I gathered up my kids without another word and we waited in the car for my husband.

I could tell he was kind of mad and he later told me I should have just let him handle it because he would have obviously said no as well. I would be lying if I said I had regrets, the only thing I wish hadn’t happened is exposing the kids to that behavior. I don’t know though, maybe that was an a**hole response so I’m here to ask, AITA?

Bursting out laughing at an entitled family request? It’s not diplomatic, but it’s human. This woman’s SIL has a history of cruel insults, so her move-in proposal was a bold overstep, especially given their mutual dislike. The woman’s laughter was a gut reaction to audacity, though it escalated tensions. Her husband’s frustration suggests he wanted control, but his failure to address his sister’s behavior earlier left the woman to fend for herself.

This scenario reflects a broader issue: managing toxic family dynamics. A 2021 study from Family Process found that 60% of in-law conflicts stem from unmet expectations or boundary violations. Dr. Terri Orbuch, a family therapist, notes, “Clear boundaries with in-laws are crucial to protect a couple’s harmony”. Here, the SIL’s entitlement and the husband’s inaction put the woman in a tough spot, making her reaction understandable, if not ideal.

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The woman’s choice to leave with her kids was smart, shielding them from toxicity. She should discuss boundaries with her husband, emphasizing that his sister’s behavior needs addressing—perhaps a united front or limited contact. Couples counseling could help them align on handling family. For the SIL, a polite but firm restatement of “no” sets the tone.

Here’s the feedback from the Reddit community:

Reddit’s got some juicy takes on this family face-off, serving up support with a side of snark. Here’s what the community had to say about this woman’s laugh-out-loud moment.

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Feodora_Tonks - NTA.. God, it was so satisfying to read about somebody reacting like that to a bully.. It wasn´t the most diplomatic response, but I think it was a long time coming.

KoomValleyEverywhere - Your spineless husband, who repeatedly allows his aggressive sister to insult you (that too in front of your children), is angry because you _laughed_? So basically his approach is that his sister's constant demeaning, insult,

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personal attacks are a-OK, but for his wife to laugh in self-defence is infuriating?. You might need to stop being nice and take a much sterner stance on disrespect with your husband.

Ok-Trade8013 - NTA. I would have laughed, too. And she just proved your point by attacking you personally.

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JackalopeKnight - NTA. Obviously SIL is, but your husband f**king sucks too. Why is he bringing his wife and kids around this person? If my sister spoke to my spouse like that, even once, she'd be right out of my life. You're not the only one who exposed your kids to that behavior, he did.

And, frankly, given that he is spineless enough to allow this situation to continue, I wouldn't have trusted him to shut the situation. Not only should you have felt free to speak up, you need be questioning him about why he's bringing you around his toxic family and allowing this behavior to continue.

Saysaywhat91 - Eh. Maybe shouldn't have laughed but I probably would have in that situation.. The absolute audacity. She essentially bullies you but wants to love in your house with her kids?. Nah hun.. Next.

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NightNurse14 - NTA. Sometimes those gut reactions just come out. The only part you can control in those situations is how you deal with the fall out. She doesn't sound like the type to take no for an answer. So maybe this will keep her off your back.

SlappyHandstrong - Tell her that for all your flaws, you have a place to live

[Reddit User] - NTA. She couldn't even handle that with grace, how on earth was she planning on remaining civil under the same roof?. Oh right, she wasn't. She was just expecting you to roll over like a dog and take it...

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Meghanshadow - NTA.. Wow. That’s some type of person right there. Your husband is also a bit of an AH. “I should have just let him handle it because he would have obviously said no as well.“ But he Didn’t. How long did he expect you to hold your tongue? And presumably he didn’t do much to stop the death of a thousand cuts comments she’d been making for a long time.

Extension_Drummer_85 - NTA you couldn’t help laughter at something that funny surely?

These Redditors are cheering her on, but do their reactions match real-world family fixes?

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This woman’s laughter wasn’t just a reaction—it was a release of years of pent-up frustration with a toxic SIL. While her husband wished for a softer approach, her stand protected her home and kids from drama. Was her chuckle a misstep, or a justified clapback at entitlement? Family ties can get knotty—how would you handle an audacious in-law request? Drop your stories and tips below!

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