My husband's sister was teaching a science course at the university level. One of her students said, in class, "Why should we have to write good English - this is a science class." Her response was that language was the best communication tool we had, so they had better learn to use it.

I have one employee who says things like: "So he's like 'why can't I put this fish in with that one?' and I'm like 'Because that one will eat this one'" I grit my teeth because she's good enough in the store that I can put up with her speech. I also like her. But I would never? Hire someone? Who put four question marks? In every sentence?