This, obviously.The wrong use of they're, there and their. Oh and the wrong use of apostrophes...though understandable and allowable in fucked postings haha :D
I also agree with people who walk too slow, when I think I'm walking at a reasonable speed, and people who don't wait for people to get off public transport, before they get on. When people stand so close to you in a queue, that they actually touch you. That one I really hate. The usual people that play music from their phones, on the bus, and people that talk really loud on the phone. Ignorant bus drivers that don't say anything when you thank them, when getting off. A busy supermarket. Horrible.
I'm sure there'll be more.