Originally Posted by Boblawblah
It feels like a lot of people could learn how to disagree politely smile Just my opinion though

https://www.speakconfidentenglish.com/disagree-in-english/

You might notice that "YOU AGAIN" isn't one of those suggested options.

I think it's a perfect way to show disagreement. Particularly if you follow it up with "How dare you interrupt my plans once more!"

Optimistically Apocalyptic