Mispronuniciations, my mom says ‘excape’, my former boss called arugula ‘aroo-gyoo-la’. A lot of language stuff actually, I have a current co-worker that pronounces feta like ‘féta’ and he sounds otherwise like a TV American accent. I notice when people’s semtence structure is wack. And the biggest one for me is people misusing words or using words wrong, if I could correct them and it be taken well and listened to, it’d be great, I could flex a bit. Non native speakers get a pass, that doesn’t bother me. I’m a big giant nerd about language and try to speak with some precision and poetry, and have a tendency to ransack the dictionary without sounding like I’m putting on a air. It’s one of those things where it came to me easy and I’m good at it and a tiny part of me still can’t understand why this stuff doesn’t come as easy to others.