Have you noticed how some people use the word couple without its companion of? It never sounds right to me so I checked a few places and it seems to have appeared only in the past couple of years. According to Organization Monkey, “I’ll be away a couple days” is not traditional but it is not incorrect.
I’m on the side of Everything Language and Grammar however, which says “This grammar error seems to be one of the most pervasive in grammar history…… couple of is ALWAYS the correct expression in ANY type of writing or speaking, not just formal. Couple is not slang or colloquial or conversational English; it’s just plain wrong, and we should stop making excuses for using poor grammar."
Do you have a couple of language pet peeves?