I've never had much patience with people who say or imply "nobody says that" based on a very limited sample space, especially when I've seen or heard something myself.
Usually it's someone from outside the region telling me some phrase or grammar is wrong when I've gotten it straight from the horse's mouth.
There's always more to a language than the little subset of it we may have encountered personally.
And yes, in case you haven't guessed, such statements as "I've never heard ..." are a pet peeve of mine.
