- Naming a scandal by putting "-gate" at the end of a word. Let's face it... Watergate was the name of the hotel, Whitewatergate was a clever play on words, anything afterwards is just being an unimaginative dick. E.g. Corngate? Give me a break!
- Calling a cycle race "Tour de [insert name]" when it's in a non-French speaking country. "Tour de Vines" is dickish, "Martinborough Cycle Race" is not.
- Hyphenating the word "email". Come on people, it's the 2000s now, drop the hyphen.
- Pretentiously telling people they can't use the Oxford Comma. It is a perfectly legitimate grammatical device, and we can't help it if our sentences look better than yours.
- Using "like" more than a couple of times in a sentence. Die, valley girl, die.
- People who don't know how to swear properly. Good for you for having a go, but you come across about as cool as a dad hanging around a teenagers' party.
What points of language set you off?