I don’t like it when people say that x isn’t a word. For example, say that a person has used the word irregardless in a conversation. Somebody will inevitably say that “irregardless is not a word.” No, of course it’s a word, you just said it! It’s not a dictionary word, it’s not grammatically correct, but it’s a word nonetheless. If it’s one or more syllables, designed to communicate meaning, and is one distinct unit used to create a sentence, then it’s a word.

I also hate it when people don’t use the Oxford comma, which woefully happens too many times.