Table ware confusion

So, I’m 19 F college student, living with my parents, and I have slight autism and ADHD.

Today I did something which I guess was wrong? I asked my father if he has had any amazing stories. My father, excited, tells me a story.

In the middle of the story, I lean over and quietly ask my mom if everyone has had salad. This is because previously I have been accused of taking too much salad and been told to ask if everyone has had some before taking seconds.

My parents get anger at me and start saying how rude I was to ask for salad durning the story. And how I’m showing that my needs are more important than everyone else’s.

I am just confused because I don’t understand how asking for salad after waiting is wrong. I know sometimes I don’t understand the world as other people do, and I’m trying my best.

I guess I just want someone to tell me how that was wrong. Especially given the context. Please no hate comments, I legitimately just want some support and honest feedback.

I love my family dearly, but I genuinely just want to understand how I can improve and do better.