Dreams do have meanings, depending on the type. If that was the dream, and if you seriously think you know more than others, than all i will say, is yeah it was a dream. I agree with Bryson, hands down. Not every dream has a meaning, if anything...far from it. I had a dream that my best friend got hit by a car, it was the day before a huge cell test. Did it have a meaning? nope. Dreams sometimes happen, when you have a fear, a warning, or a message. Then that has a meaning. There are others, like yours that is just a dream, a pass time, ect.
Hope this helped