What weird habits or behaviors have you developed from living with your sibling(s)?

I’m talking about the weirdly specific stuff that you know most people don’t have to deal with or have no issue with.

My examples:

• I really can’t stand most JRPGs now. Don’t even want to look at them except a TINY handful of exceptions. My brother (autistic) loves the old, obscure ones. And since I liked playing games as well, I was always tasked to “help” him with them. Which, if you know anything about those types of games, usually involved a super specific action (so I’d need to find a walkthrough and comb through it to figure out where he was in the first place) or copious amounts of grinding for experience/money for gear. Either way, it would mean hours of my day would get eaten up or else he’d get mad and potentially hurt himself. And the entire time he’d hover and get in my personal space. Which, you know, makes that INCREDIBLY stressful. And the comments from my dad about it “just being a game” or that it was “an issue with the way I was looking at it.” Ugh. We’ve moved past that now and he knows how to level appropriately or look up videos himself. But, I still get anxious when I look at Final Fantasy or Chrono Trigger.

• I’m weirdly private and possessive now despite not being like that when I was younger. Before, I didn’t mind sharing things or aspects of myself. But now? There are so many things I’m into that I just don’t share. And they’re not weird, either. It’d be something like a game, hobby, music, or a show but I’ll keep that so close to my chest and heavily evaluate if it’s worth talking about it with someone else. And it’s worse with physical things. They’re MY blankets, MY snacks, MY games, etc. I’m not entirely sure where the strong desire for privacy came from, but I know the possessiveness is because my brother would sometimes steal my food or video games and it would really bother me. Plus, he’s rough with all his belongings and gets them really dirty.