Why do people say that a clock is five minutes fast? If it is fast in any amount, then the difference between the time shown and the actual time would constantly grow larger, rather than be fixed at five minutes. Why don't they just say what it is? It's five minutes ahead.
At Primary School, when I was about 7 or 8, we were playing a schoolyard game. I think we were having footraces. This was during recess. I said, jokingly, "Whoever comes first wins a Holden Astra!" At this point, one girl got really annoyed. I asked her, "Don't you like Holden Astras?" She replied, "I don't know what a Holden Astra is," and she stormed off in a typically 8-year-old girl kind of way. I didn't understand. How could she not know what a Holden Astra was? After all, I knew what a Holden Astra was, and if I know it, that means everyone else knows it. Because it's obvious that all the world's information comes from the people, and goes to me. I saw a Holden Astra advertized on the TV the previous night, so it had to be common knowledge.