There isn't enough time in the world to list everything that annoys me, as simply more or less everything does. But I can try;
Fat people, bad drivers, David Cameron, people who don't acknowledge you after letting them out of a junction, fat women in the gym swimming pool that wonder why they aren't losing weight by standing in the shallow end talking about the menopause with there friend Margaret, people who cycle on paths, people who walk slow, people who can't win an argument with facts so turn to insults, men that have to use weapons in fights or a group who pick a fight with one person (the days of a good old gentlemanly one on one is over), fat people, fat people who wonder why they are fat because they only have a few 'treats' occasionally, men who self tan, women that wear high heels then proceed to walk like newborn giraffes, fat women in leggings, Lorries overtaking on a dual carriageway, people who put spoilers on front wheel drive cars, people who think the measure of a good time is how many pints you can drink on a weekend, the government, people who don't respect other people, jobless scroungers, Leeds united fans, Facebook, people on twitter using 17 hash tags per tweet, fat people who ask for diet advice then don't take it, people with terrible form at the gym, personal trainers who clearly don't know what they are talking about, people who spell of with a v - 'ov', people who type using text language (hey bbz, u k? Wubu2? Luv ya), people who treat animals bad, David Cameron, footballers and the amount of money they earn, people who think nutrition is simply calories in vs calories out, lazy people, fat lazy people, fat lazy people on mobility scooters, fat lazy people on mobility scooters that claim disability because they are too fat and lazy to work..
There's just a few, I could spend hours reeling off more.