When someone says, "It's getting cold", what he really means is, "I'm beginning to feel cold". Others may not be feeling cold at all. So is it really getting cold? Not necessarily. Why don't people say what they mean? They say, "it's getting cold" as if everybody should feel cold just because they do. We need to learn to be objective and not try to be the center of the universe.
When we are feeling hungry we don't say, "it's getting hungry"; we say what we mean. There are countless statements we make every day that do not reflect reality but instead attempt to influence the thinking of others. What casual statements do you make that may not be universally true? Do you think of possible exceptions when you say these things? I'll bet not. "Think before you speak" is a good motto to live by.