Hold on, fucko. You can't just write a subtly ominous statement like "we need to be concerned about rust" on a full sheet of line paper and not expect to raise some eyebrows.
Why? Are there some unseen threats coming from rust that we're not aware of? And if so, why didn't you expound upon them in detail? Do you enjoy making people shit themselves out of fear of death, dickhead?
Well here's a warning just for you, Angus: you need to be concerned about your grade: