I thought of a couple more petty ones - -
Adults who are extremely picky eaters & have very limited & plain palates... and I say this as someone who can be a little picky sometimes (I refuse to eat anything w/ mayonnaise)... but I’m talking about someone who doesn’t ever eat vegetables or only likes very, very plain food or only likes things like pizza, grilled cheese, french fries, & chicken nuggets & won’t even consider trying anything new or a little bit different
Adults who go to bed really early... now, if you have to get up really early, I may give you a pass... but, still... If I’m going to get judged for being a night owl & sleeping late, I’ll judge someone else for going to bed early.