People who make a big point of letting you go first/letting you out when you're driving, when you've already been sitting there for ages and there's a huge gap behind them so you could have got out by yourself anyway. Hate that.
People using 'myriad' incorrectly.
People saying 'legs akimbo' ugh.
Words like 'ginormous'.
People ringing my landline.
People leaving rubbish messages on home answer phone (i.e. one that doesn't actually say anything - e.g. 'It's me. OK?'
Same person ringing back 20 minutes leaving a really snotty message because you didn't realise previous message was urgent. Then saying that 'there's not much point having a phone if you don't answer it!' - well, yes there is - it's for me to make calls to people I want to speak and the answer phone is for me to find out if I want to speak to you.
And another phone related issue - when working in an office, why, oh why do colleagues insist on answering your phone when you have voicemail, to take the name and number of the person calling, but no message at all - so that you have to phone the person who called, find out what they wanted, hang up, go and find the information and ring them back again.
I'm feeling quite annoyed now.