This pretty much never happens in my adult life anymore but my biggest pet peeve was people lecturing me about how late I'm running before I get to the thing they think I'm going to be late to. No, I purposely timed things so I'd get there on time and not more than five minutes sooner AND NOW YOU ARE MAKING ME LATE. Why try so hard to give me this strong sense of urgency and then trap me right in front of you? When I was living with a boyfriend in Florida I had a hair appointment for a place just a block away from the house. I could leave the house at 11:00 and get there before 11:01. I left like, idk, two minutes before and his dad stopped me to go on this big tirade about how disrespectful I'm being to the hair ladies or something I don't even remember so I cut him off mid-sentence to say something snippy like "I need to go right now and I'll be on time, I don't have time for the lecture." Then he showed up at the salon while my hair was being cut so he could yell at my boyfriend about how disrespectful I was to him.