I want to ask what my dream means?

In my dream i was in a halo 2 spartan armor with no helmet crawling on my back with a pistol shooting things and scoring headshots. i then had to eat a great "feast" and i ate till i was almost about to explode to enter a room when i entered i was in my regular clothes and found my self in a clroom with my clmates. i then sat down next to my best friend and in the middle of the cl room two men were wrestling then they froze and then merchandise appered on them and my friend spent 200 some dollars for a blue hat and water bottle. i told him it was a waste of money and he said that he didnt care then a kid from my school was in the ring acting all tough to have a 29-1 record in the ring he asked for any challengers i challanged him and easly won, the prize i got was a miniture R2-D2 trinket that was very valuable, i went to show my cl then i apeared back in the same clroom and our teacher was lecturing about that we dont use our time well, and i got every 1 to be quite.