Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To be annoyed SIL showed DS her lactating breast

261 replies

dodomin · 30/06/2026 23:07

DS just turned 4 and he walked in on SIL breastfeeding. He asked what she's doing and she said this is how I feed the baby milk. All fine with me. She asked him if he wants to see and he said yes. So she squeezed her nipples to show milk come out. I feel like that is unnecessary.. I feel like even I wouldn't have done that if I was breastfeeding.

AIBU to feel annoyed. Yes, I understand breasts are not sexual and they're functional parts etc. But it is still taught as a private part to children and I just don't appreciate it.

OP posts:
YankSplaining · 01/07/2026 03:30

I don’t think it was outrageously bizarre, but I think she should have had the sense to realize that not every parent would be okay with that, and not done it.

Tourmalines · 01/07/2026 03:26

dodomin · 01/07/2026 02:09

I spoke to DH about it. He is furious and feels it wasn't her place at all. PPs have said be wary she will overstep more boundaries. SIL has always been a bit difficult eg. not giving DH's spare key back and then letting herself into our then home without asking us or bringing her (5!) friends to DD's intimate family birthday party without asking us etc.

He's actually concluded he's totally fed up and doesn't care if our kids don't have a relationship with her or their cousin. I'm totally fine with this because she's honestly just hard work.

Edited

She sounds like a pain in the arse .

Missey85 · 01/07/2026 03:23

The only one making this a big deal is you maybe your the weird one there's nothing wrong with what she did sounds like you just want a reason to start a argument 😂😂😂😂

aurynne · 01/07/2026 03:14

@dodomin, after reading the whole thread I see that you have had conflict with your SIL in many areas, so I understand this is just the last straw for you and your DH.

I just wanted to reassure you, as a midwife, that this interaction is not going to affect your DS negatively in any way. In fact it may be very positive if, in the future, he chooses to have children. When I talk about breastfeeding with couples, especially firest-time mums, I explain that one of the reasons we now struggle so much with breastfeeding is that we don't grow up seeing women openly breastfeed anymore. As children we're not allowed to look and ask questions, because it is considered "rude". I recommend couples to let their children, both boys and girls, see women breastfeed (as long as the woman is ok with it, of course), stare, point and ask questions, and this helps fixate in their mind how a newborn baby is fed. In humans, breastfeeding is not instinctive, but a learned social skill. A person who has watched it in infancy/childhood will find breatfeeding, or supporting a woman to breastfeed, much easier and more natural than someone who has never seen it, or feels uncomfortable thinking of a feeding breast.

This is no way intends to undermine your feelings of discomfort, which come from the right place.

maxslice · 01/07/2026 03:01

He asked SIL a question, she answered, all matter of fact. He’s 4 years old and probably moved on to other things. You are the one who is weirded out, not him. Time to move on, too.

occamsrazor26 · 01/07/2026 02:12

dodomin · 01/07/2026 02:09

I spoke to DH about it. He is furious and feels it wasn't her place at all. PPs have said be wary she will overstep more boundaries. SIL has always been a bit difficult eg. not giving DH's spare key back and then letting herself into our then home without asking us or bringing her (5!) friends to DD's intimate family birthday party without asking us etc.

He's actually concluded he's totally fed up and doesn't care if our kids don't have a relationship with her or their cousin. I'm totally fine with this because she's honestly just hard work.

Edited

Honestly, sounds like the best solution. She's barely in your life, hardly knows your son, has already overstepped this and other boundaries, I'd just quietly shelve her and have as little to do with her as possible.

dodomin · 01/07/2026 02:09

I spoke to DH about it. He is furious and feels it wasn't her place at all. PPs have said be wary she will overstep more boundaries. SIL has always been a bit difficult eg. not giving DH's spare key back and then letting herself into our then home without asking us or bringing her (5!) friends to DD's intimate family birthday party without asking us etc.

He's actually concluded he's totally fed up and doesn't care if our kids don't have a relationship with her or their cousin. I'm totally fine with this because she's honestly just hard work.

OP posts:
Sassysia · 01/07/2026 02:07

I can guarantee your 4yr old won’t be thinking as much about this as you are and he also is not likely to even remember it when he’s older anyway! I wonder if you’d feel differently if it was a daughter and not a son? 🤷🏼‍♀️

occamsrazor26 · 01/07/2026 01:57

SowWhatNow · 30/06/2026 23:33

I can't quite determine if this is a sarcastic response or not. Is it? Hard to tell with MN 🤔

Edited

Oh, are you being sarcastic? Hard to tell with MN 🤔

SallyDraperGetInHere · 01/07/2026 01:51

SIL knows a boundary has been crossed, which is why she messaged. Explaining the mammal function of feeding an infant to a young child is one thing. I know many an adult who would feel an intimacy boundary had been crossed by a one-to-one demo, and we can be all nonchalant about it but it’s a step too far to demonstrate to a very young child not in her own immediate family unit.

LivingTheDreamish · 01/07/2026 01:48

Well no harm done and I'm sure DS was fascinated but she definitely shouldn't have done it. I would send that exact message OP.

occamsrazor26 · 01/07/2026 01:47

PomplaMouse · 01/07/2026 01:42

I don't think its a healthy societal boundary/taboo, but it one, so I do think she was presumptuous in crossing it without parental approval.

Why don't you consider it a healthy taboo?

Shutthedoorbehindyou · 01/07/2026 01:44

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

Cows don’t have a concept of boundaries and what is and isn’t appropriate, so I don’t tend to take my standards from them. If my sister squeezed milk out of her breast for my child to watch, my first thought wouldn’t be “well, humans milk cows so…” Where is that thought meant to lead? The cows aren’t milking themselves. Hang on sis, let me
milk you for my son to watch so it’s less weird.

Very odd to justify OP’s SIL’s choice to do this by saying her son might see cows milked on a farm. Cows don’t feature in my weighing up whether or not it’s odd behaviour. It’s odd behaviour by human standards.

PomplaMouse · 01/07/2026 01:42

I don't think its a healthy societal boundary/taboo, but it one, so I do think she was presumptuous in crossing it without parental approval.

caringcarer · 01/07/2026 01:41

She should have stopped at telling your DS this is how I feed my baby. Absolutely no need to then squeeze her nipple to make milk come out.

occamsrazor26 · 01/07/2026 01:36

cocog · 01/07/2026 01:24

Maybe she didn’t need to go as far as to show him her nipple but he asked a question and she answered honestly and factually. He absolutely understands it now though. He probably hasn’t even been bothered about it since as he completely understands it now. He’s her nephew and very young I wouldn’t worry.

I'd just leave it, considering the absolute batshit and barmy responses on here shouting about sex, bestiality and more from those who want to pretend it wasn't boundary crossing..

Obviously, OP is right, the sister in law crossed a boundary, as she has barely any relationship with her and the woman barely knows her child, I'd just avoid her as much as possible in future. Far easier than trying to have an adult conversation, given some of the responses on this thread.

Whataflippincircus · 01/07/2026 01:34

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

Fabulous post. 😂😂😂

IndigoBluey · 01/07/2026 01:34

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

this response is killing me 🤭

@Shutthedoorbehindyou that sounds like a good yoga teacher you have. Do you shut your own door when practising these risqué licking moves?

occamsrazor26 · 01/07/2026 01:31

@LeopardPants No, you responded with the attempted shut down "prudish". I am afraid that invalidates your response.

It's fine to have questions as the OP did and it's fine for her to want to make it a boundary that a woman who has barely any relationship with her child doesn't squirt milk from her nipple at her child or in any way try to insert herself into teaching him about the facts of life, sex, breastfeeding etc.

As OP said, quite fairly that he "walked in on SIL breastfeeding. He asked what she's doing and she said this is how I feed the baby milk. All fine with me" she is not prudish and it is wrong and a poor tactic to try to classify her or others who have also agreed it is boundary crossing as such.

purpleblast · 01/07/2026 01:30

If it was ok kids would watch woman squirt out milk on a PowerPoint at school. It’s good to normalize breastfeeding but kids watch lambs feeding and understand the situation without needing a demonstration.

EmeraldShamrock000 · 01/07/2026 01:29

GarlicEverywhere · 01/07/2026 01:00

OK, maybe I'm going out on a limb here but I don't think that's terrible either. She's walked in on an uncle in the middle of a pee. Awkward - but if she asks what he's doing, she clearly hasn't yet learned that men/boys have penises and pee out of them. So it would be appropriate to explain.

Inappropriate to make a big deal out of it, but neither scenario portrays a big deal. No need to do the "Look ..." thing because she can already see what's happening. He should then inform her it's private and ask her to leave the room.

I think it's quite useful for a kid to see what comes out of a lactating nipple. Apart from anything else, leaks happen and the child who knows about it won't be freaked out.

Yes an explanation is fine. Would you be okay if he showed her the urine dripping from his penis or in full flow?
I don’t find OP’s scenario sexual just weird as fuck. Next Aunt will be explaining periods and popping in a tampon, sure it’s normal. 🙄

IndigoBluey · 01/07/2026 01:25

@dodomin that is an incredibly far fetched attempt at a comparison, a male weeing v baby getting fed. It’s people like you who say you don’t have an issue with the natural way to feed a baby yet get prickly when it happens.

Originally you said that your DS responded yes when asked after his own curiosity as to whether he wanted to see how the baby was fed. Latterly you said your SIL shoved a nipple in his face, two very different scenarios. Which was it and what do you anticipate the potential risk to DS is?

cocog · 01/07/2026 01:24

Maybe she didn’t need to go as far as to show him her nipple but he asked a question and she answered honestly and factually. He absolutely understands it now though. He probably hasn’t even been bothered about it since as he completely understands it now. He’s her nephew and very young I wouldn’t worry.

LeopardPants · 01/07/2026 01:24

occamsrazor26 · 01/07/2026 01:13

Oh dear, you nearly sounded reasonable there but had to lower yourself to calling a normal query about boundary crossing prudish.

Shame.

It’s a scale, like most things in life. What I consider to be acceptable (or normal) behaviour, others may not. I might think of them as being more prudish than me. It doesn’t have to be absolute.

And going back to the OP, my kids watched me express milk now I think about it. Don’t see an issue with that either but of course others may think that’s best done behind closed doors 🤷🏻‍♀️

occamsrazor26 · 01/07/2026 01:15

dodomin · 01/07/2026 00:22

I am not saying there's no difference and I accept it wasn't the best analogy.

For those who do agree it was overstepping a boundary? How could I best communicate it to her?

Thank you for explaining it to DS but next time please no visual demonstrations 😅

Edited

So yeah, she did overstep a boundary, and as she barely knows your child and you have not much of a relationship with her I wouldn't bother trying to explain it to her, just avoid her.

As you can see from this thread she will probably immediately start shouting about sexual things otherwise.