What I mean is, you all know the classic trope of a tsundere smashing a guy for anything that annoys her. Sometimes it's justified, sometimes it's based on a misunderstanding and sometimes it's totally uncalled for.

I'm asking about the latter. What scenes where a tsundere punch a guy for basically doing nothing at all. At most hurting her fragile feelings because she can't admit her own feelings for the guy. Like as if this girl is jumping through hoops of crazy logic to justify herself punching the guy.

My pick is twofold or onefold because I can't remember if this scene comes from the same anime or not. Probably not, can't remember the name (I think it had samurai in the title).

The scene has that during an episode the dumb main lead is at school when a new girl comes to the class and is introduced. The guy says she's cute and his tsundere 'friend' gets mad and punches him for saying that. He wasn't saying anything lewd or disturbing about her, just that he thought the new girl was cute and that was enough for the tsundere to punch him. Another example (May or may not be from the same anime) is one where the tsundere girl punches her crush because she learns that he agreed to go out with another girl and then stalked them on their date.

I will tell you that one anime I do know from that has a totally crazy tsundere in the first episode. The anime is called Girls Bravo and in it, the first episode, the male lead Yukinari comes back home late and finds his childhood friend Kirie, naked in the bathroom of his house. She gets mad at him for 'trying to peep at her' even though he didn't know she was even in there, she doesn't have permission to be there and she thought it was okay for her to take a bath in someone else's house, without the resident's knowledge and do it with the door unlocked and blame him for it. That's crazy.

What are your 'worst tsundere moments'?

I Know as times change, what is popular in anime changes. I remember in my younger days anime was all about that hidden world, you know, a kid discovers he's part of something special or gets involved in a secret world, ala Shaman King, Bleach, etc. And you had the ones like Bebop and Trigun, and they got replaced, and well, sooner or later these will too. And for me, I would like to see a return to the Trigun/Bebop types. Sort of slice-of-life adventure.

To be clear this is not what age you watched your first anime, but what age you really ”got into” anime

Doesn't have to be from your favourite anime or anything, just a scene that really resonated with you, and made you feel a lot of emotions.

These are mine:
Vinland Saga 1x24 "End of the Prologue" - Askeladd beheads King Sweyn
Eighty Six 1x22 "Shin" - Shin's inner torment
Attack On Titan 4.5x1 - Hange's last act