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AIBU?

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Sister went nuts over a cup of coffee

509 replies

CrashBambiCoot · 24/08/2025 14:19

my sister visits my house around 3 times a week. Every time she comes she takes the piss out of my coffee calling it “half a cup of coffee” etc

She last visited Friday where I made her a coffee and she snapped “oh come on, fill it up for fucks sake” saying I’d only half filled the mug (I hadn’t).

This morning she turns up. I make coffee, as I was taking it into the living room she looks into the mugs and screams “half a cup of coffee”. I snap back “I don’t fill it to the top so it doesn’t get spilled! Nobody fills coffee right to the top” so she started dancing around me acting crazy shouting “ooo don’t spill it” etc before suddenly lunging at me and shouting in my face - coffee got spilt.

Now I’ve said I’m not making her coffee anymore. That’s it. Sick of the piss taking and ranting and raving. DH witnessed all this and basically joined in with her. She’s 42, DH is 50.

its not normal to fill coffee right to the top is it??? And the hysterics is certainly not normal is it?

OP posts:
Thisisbetweenyoumeandtheinternet · 25/08/2025 20:25

Can we see a pic of it? Like how high you fill it?

If you know she does it just fill it right up?!

Delphiniumandlupins · 25/08/2025 20:20

We probably need a picture to show how full you fill your mugs.

However, your sister is being rude. Anyone who comes to my house 3 times a week can make their own coffee if they don't like how I do it. Do you ever go to her house? Does she fill mugs noticeably fuller than you?

Devora13 · 25/08/2025 20:18

Has she got a life?

CallieOMally · 25/08/2025 20:18

Trovindia · 24/08/2025 14:53

Her behaviour was poor but I think she was trying to be joking with you.

Yabu for not filling the mug, my mum she's this and I have to go and top it up. I fill mugs to about 1.5-2cm below the rim, like this (I don't know why my tea is frothy!)

Sorry but what the fuck is this abomination??

dsndonna · 25/08/2025 20:15

I used to fall out with my sister all the time, she was very volatile but I knew she couldn't help it, she had been started on valium age 12 when puberty started and my mother couldn't cope with her. She was never actually diagnosed with anything back then, but I think it was ADHD. When she was a teenager she was always in scraps, all the boys same age were terrified of her. I was a couple years younger and she protected me like a tigress. So she was volatile and over the years I'd had plates and cups launched at me many times. And exactly for the type of situation you're talking about. What's the problem with filling up her coffee? She told you more than once it was bothering her. Don't fall out with your sister, cherish every day you have together. I lost my sister and all the fun has gone out of my life, she was the funniest person I knew. So just fill up the coffee cup and enjoy every minute you have together ❤️

Onthemaintrunkline · 25/08/2025 20:11

So yr sister comes to your place for a ‘disappointingly short fill’ cup of coffee 3 times a week. If she’s so upset about what she perceives as short rations, why has she continued to come and has she ever, instead, invited you to have coffee at her place?

400rider · 25/08/2025 20:09

And this is when I’m glad I don’t have a sister. She still calls three times a week? When do you go around hers?

If she likes drinking coffee that much (it’s getting expensive) tell her to bring her own in future to make (my DIL sister has her own jar in the cupboard because her baby sister and my son drink tea)

Greenwriter76 · 25/08/2025 20:08

What in the they-both-need-sectioning is going on here?

I love coffee - but if I go to someone’s house and they make me one, I accept however much I’m given gracefully. End of.

MushroomQueen · 25/08/2025 20:06

Can I see an example coffee? She’s being a bitch regardless tho

HeadsWinTailsLose · 25/08/2025 20:03

She needs to calm down and you need to fill the cup. Personally if one of my family repeatedly gave me short measures I’d offer to make the drink myself.

Missj25 · 25/08/2025 20:01

Absentmindedsmile · 24/08/2025 14:33

None of this is normal

My thoughts exactly !
OP your sister is bonkers & I don’t mean to cause offence..
And what’s that husband of yours story ..
He doesn’t sound too great either being honest ..

Goldengirl123 · 25/08/2025 20:01

Yes I fill it right to the the top

PuggyPuggyPuggy · 25/08/2025 20:00

Ooh, this thread has been resurrected!
I think the correct response to being given half a cup of anything is "Oop, tide's out". A cup is a unit of measurement for a drink, same as a pint.

Cinaferna · 25/08/2025 19:58

GreenGodiva · 24/08/2025 14:33

It drives me crazy when people only do cups filled 1/2-2/3. If I wanted a tiny coffee I’d ask for a tiny coffee. If you are making a a drink, you fill the receptacle to about 10- 15mm from the rim ( unless there is a legitimate reason not to. I ask my DH for juice instead of coffee or tea, he brings me half a glass. He’d be bloody gutted if I made him a mini pizza for dinner instead of an actual adult meal but here I am supposed to be happy with half a drink.

I'm the same. I hate underfilled cups. But I'd just top it up without fuss or comment. Her rudeness is the real issue. Not you being stingy with hot water.

Maxorias · 25/08/2025 19:54

Didn't rtft but unless there's a massive drip feed, this sort of behaviour would make me want to bring an overly full cup and make sure to spill half of it on her.

It doesn't even matter if OP really only fills half a cup- so what ? If I'm a guest and someone is making me coffee, the only appropriate reaction is "thank you".

GucciBear · 25/08/2025 19:54

It sounds as though she needs mental health check.

Millytante · 25/08/2025 19:54

lovethenights · 25/08/2025 19:21

I like a full cup of coffee.
When you say half do you mean like half the cup is empty if thats the case you are odd.

Maybe it’s the bottom half which is empty, in which case it’s clear the husband is slipping magic mushrooms into everybody’s cups. Hence the capering sister.

Batelyboo · 25/08/2025 19:52

LucyMonth · 25/08/2025 19:50

sniff sniff what’s that I smell? A massive amount of exaggeration to get people on your side?

She was screaming was she? Snapping? Acting crazy? Ranting?

I can’t abide being given a half cup of anything, like I’m a child that can’t be trusted not to spill it.

Do people not joke around and take the piss out of their siblings? & if she says to you repeatedly that you only give her half a cup of coffee why don’t you fill it up properly?

Yeah I know due to the nature of Mn we will only ever get one side of the story but I suspect there’s more to this than meets the eye. It’s just not adding up.

Buzyizzy217 · 25/08/2025 19:52

Your behaviour was exemplary. The correct way to make a coffee is to leave an inch minimum at the top. You’ve clearly been well taught and I wouldn’t bother making anything for those two oafs ever again.

Millytante · 25/08/2025 19:52

She clearly needs far less caffeine in her life, for a start. Capering about like a demon in front of you! At her age, it sounds like loose screws.
Jaysus, I hope you refuse henceforth to pour either of these ingrates any more coffee.
Your husband needs a kick up the arse too of course. Tell him peace will reign once more only if he buys the house a really snazzy coffee machine he will delight in using himself, so he’ll no longer crib about meagre measures from you.

PotatoLove · 25/08/2025 19:51

Both her and your DH need to fuck right off with that ridiculous behaviour.

LucyMonth · 25/08/2025 19:50

sniff sniff what’s that I smell? A massive amount of exaggeration to get people on your side?

She was screaming was she? Snapping? Acting crazy? Ranting?

I can’t abide being given a half cup of anything, like I’m a child that can’t be trusted not to spill it.

Do people not joke around and take the piss out of their siblings? & if she says to you repeatedly that you only give her half a cup of coffee why don’t you fill it up properly?

DeeKitch · 25/08/2025 19:47

Sippy cup filled to the absolute brim, lukewarm so she doesn’t burn her toddler mouth

Hobnobswantshernameback · 25/08/2025 19:41

14 pages of froth and not a sign of the OP

WiddlinDiddlin · 25/08/2025 19:40

The first time, she'd have been told to make it herself.

I'd have serious words with my partner if he took my sisters side when she was being a massive tit (he never would, and she is often a massive tit).

If I'd been so soft as to let it get as far as her yelling in your face and coffee being spilt, she'd never be welcome in my house again!