I talk baby talk to my cats all the time, but my god she is on a whole other planet. Joose in da frooj??? Sounds like some strange Scandahoovian dead language lol

I think I would have been mean and asked her why she's inflicting her boyfriend's fetish on family. Then I'd probably ask if he's in the pacifier and diaper set or goes to those conventions. (They exist. I suggest you don't Google.)

I've known a couple people like this, and I can't be around them. They, of course, have the right to do what they want, but I won't be there for it. It's beyond annoying for anything but babies and pets. And I can't take the person seriously at all. I feel embarrassed for them.

Is your surname Binks and are you related to a certain JarJar?

I'm 42, and I admit I used to use a higher-pitched cutesy semi-nonsense talk as a defense mechanism with my ex. I apparently - somewhere along the line - thought it would make me look more harmless and nonthreatening to him. (I also used to grayrock a lot of the time when he would lecture or harangue me.) It always disgusted me when I'd hear myself talking in a cutesy-wootsie voice or making little cute animal noises (like saying "mew?") It was never used in a sexual/kink/etc. way, it was ALWAYS during times of stress or when he was hostile towards me and I was trying to defuse the situation in any way I could. But I can absolutely see how it would irritate and disgust others - I irritated and disgusted myself for doing it :(

That's right up there with the chosen cartoonishly high voice or the whistling hissing 's' some women employ because they think its cute or cutsie when really it just makes you want to punch them or something. You are an adult. Stop trying to sound like a child. Baby talk the cats, sure. Baby talk actual babies, sure. Baby talk your significant other at home, weird, but sure whatever. But for the love of all things this is like eating with your mouth open. Stop it.

I LOVE the 1-2 punch of "oh are you jealous?" and "oh are you anxious?" She clearly hit the nail on the head but baby sis doesn't want to hear it (also, speaking on behalf of my fellow Millennials, we do not "all" do this).

I have used very mild baby talk in moments of being cuddly with baby family members, or being silly and making them laugh, but for the most part I speak normally and limit it to cute nicknames like Punky Pie when I greet them xD. The sister is nuts.

"Yes, you can absolutely do what you want. And so can I. So I'm going to ignore you until you can communicate like an adult with me. Your move."

As a millennial I can safely say we absolutely DO NOT talk like that. And I don't know anyone who talks like that. So no, it's not a millennial thing.

Really didn’t know how badly I’d be out numbied here

I had a relative, many years ago, would talk baby talk with their partner. I would cringe so hard inside although I never said anything. They’re grandparents now, like myself, and I hope sincerely they got over that cr@p. Haven’t seen them in decades so no idea., but man I hope so. 😬

This is unhinged behavior. As someone who has carried through some "child like" traits into adulthood, baby talk is my kryptonite. I despise it with a deep and consuming hatred. So I am completely biased and sympathize so, so much. I deal with it by setting boundaries. Don't speak that way to me, my kid, my animals anywhere, period. Not in my house at all, but unfortunately for me I don't get to decide how you talk to your children or pets in public or in your home, but I might gag. (sorry it's visceral, I literally can't help it) However if you do baby talk, I will loudly decry that giving humanity free will was the worst mistake I ever made. Because it's my multi-verse and you just get to live here. And no matter how old I get, lime Kool aid will always be green water from the planet kitchen.

Oh, and that one person going on and on about all the "cute" things they like - that's a completely different situation. You can collect anything you want, wear anything you want, but when you refuse to communicate clearly when you are fully capable of it, you're being annoying for no other reason than because "it's cute" when it actually isn't.

She just needs a good smacky wacky round the heady weddy.

What an incredibly silly & infantile person the baby-talking sister is. OP wanted to know if she was the AH for withholding the cookie - Hell, no. The sister acts like a child so she should be treated like a child. "If you don't stop that, you won't get any of the cookie!" & Was she too harsh with her? Another Hell, no. I would have done any or all of the following (& long before the situation had gone as far as this did): Told her to knock it off - she was being silly & childish & it wasn't "cute" - it made her look ridiculous - & specifically not to speak to my child like that, ever; ignored her when she was doing her baby thing; told her she was not to speak like that in my house & if she didn't stop immediately she was no longer welcome & would no longer be included in events held there (& if that caused some others not to attend, at least the ones there could have adult conversation); I would not be with her in public, such as at a restaurant, if she began to talk in that unintelligible language (Really? Can you imagine the reaction of the server if she ordered her meal in that silly fashion? They'd probably think she was impaired in some way, maybe had had a traumatic brain injury, or was drunk.); have a few words with Mom abt being an enabler (yes, she's your youngest child but she's an adult & needs to act like one); & if th8s nonsense didn't stop, LC or NC (only the 2nd time I've ever advised that but this is absurd, unbearable, & unconscionable). I hope it all worked out (I wish OP's other sister had participated with her to present a united front) but it seems odd that Mom made such a turn-around & so quickly - she may not have been fully on-board. & I have no Earthly idea why this has infuriated me the way it has -maybe I've reached a point where I no longer put up with things (or people) that cause unpleasantness or "strife" in my life when we all already have enough that nothing can be done abt, but some things like this can be resolved.

ill say things like confuzzled/confuzed or cowinky-d**k. however i only do this infront of my husband and only wen im being cute. basically talk like an adult with an occassional silly way of saying it word. like ill say "what you just said made me completely confuzzled" id never do flat out baby talk. its not even cute. only ppl allowed to do baby talk r babies. i dont even use baby talk with my dog. all i do is go a slightly higher pitch and talk all excited. never do baby talk tho