So, today we were talking about how there is no such thing as "twice as slow," or, "twice as cold." This idiom is a favorite pet peeve of mine, because it is so utterly meaningless, yet when someone says it, you somehow know exactly what they mean. They simply mean, "Dang! It's really cold today." Or, "Dude, you are reeeaallly moving slow, even compared to that other slow guy!"