one of my biggest pet peeves occurs at sinks that are located in public restrooms. it bugs the heck out of me when someone washes their hands at a sink and then lifts their hands and shakes off the water before drying them. invariably i am the one who gets their post hand washing water on me after their big shake. i don't want to be included in their hand washing. if you have to do the wet hand shake keep your hands low in the sink when you do it so you don't splash anyone!
another pet peeve of mine happens (big surprise!) on the subway . the new subway cars are one long bench instead of having indentations that separate the benches into separate seats. many people didn't like the old benches because some people were too fat for them . i say lose some weight! with these new benches there is always some joker trying to put her purse between you and them when you are sitting next to them. it wouldn't be so bad if there was a lot of room. but usually it means that there is less room and you get to squeeze against them and their bag . if they didn't put it there you would have a comfortable amount of space to sit and it wouldn't be big enough for another person to squeeze between the two of you.