AIBU for blowing out my nephew’s birthday candles as a joke

[AliceNotInChains]

My nephews 6th birthday party yesterday. He was struggling to blow all the candles out so I jokingly blew the remaining ones out for him. My sister went on a full on strop over it saying I ruined his moment. AIBU to think she’s completely over reacting?? She ended up relighting the candles for him to “have another go” making it a much bigger deal than it needed to be.

Op, you really need to grow up

This.
You shouldn't have done it

And also, if I've understood OP's posts correctly, to make a passive aggressive point to her sister by spoiling a young child's special moment - OP apparently being annoyed that her sister has carefully organised her DS's party rather than just shrugging her shoulders, doing the bare minimum and leaving it to turn to chaos.

What was your plan to upset him last night? Tell him Father Christmas isn’t real?

I think it was a weird thing to do and you shouldn’t do it again, but your sister is making it into a bigger deal than she needs to given your nephew wasn’t upset.

Would like to add some of the people posting on this thread are significantly more batshit than the OP

What a crappy thing to do, hopefully they won’t invite you again

It's not really a joke is it? Nothing funny about it. Spoilt his moment, potentially embarrassed him, ruined his parents precious childhood video, I literally can't think of anything hahaha. Sound more like you were impatient! I wouldnt be inviting you to my young childs birthday again.

That's a horrible thing to do

And yet you're the one who came here ranting about her and blustering about how you wouldn't see her again after this outing which you have been forced to attend.

This all shows you're the problem here girl 😂 . Now everything is fine and dandy and it's mumsnet that is wrong 😂

Hahaha until the next argument over something silly and you run back to mumsnet.

It's obvious from your posts that you think your sister is annoying and you seem obliged to attend her events yet you're also pretending everything is fine while trying to act like what you did wants ridiculous and wrong.

Such a cruel thing to do

Well your post went down as well as blowing out the candles, and if you still think you are in the right then never have kids.
it was an arsehole move, kids need time to do the adult things. You were in the wrong and spoilt his moment and it will always be remembered by the kid.

Errr....FIVE days ago she agreed she had made a faux pas and she wouldn't do it again....I don't get why people are giving her such a bad time on this thread.

You’ve got it all wrong, @SergeantWrinkles❤️

It was a DICK MOVE @AliceNotInChains
It isn’t a joke unless it’s funny.
And you’re no comedian.