Not just toast crumbs in butter etc, but jammy smears, too. Yuck
People who pronounce drawer as drawrer, same for drawing.
People on expat forums who are ott orgasmic about their latest delivery of heinz baked beans from asda via a courrier to the Limousin. Where the fuck do you think they came from? Ever heard of cassoulet?
People who spray everywhere on purpose when opening a bottle of champagne. OK, will let them off if it's Moet - horrid, overpriced crap.
People calling from their mobile on a train who tell the person 'I'm on the train'
Americanisms such as I'm cool/good etc
Men who sit on trains with their legs wide apart so that they take up 2 seats. Please note that if you are reading this, I do not want to see your bits.
Small children with pierced ears
Facial piercing
Butter on the outside edge of a sandwich - MIL used to do it. Made me want to heave.
Eating anything with mouth open
DH giving dd chewing gum when she was about 5, so now all you can hear is her chomping all the time.