Why are all of my dreams so random and weird?

I keep having dreams about old classmates in weird situations, why?

• Over the past couple of years I have had strange dreams with several different classmates from high school in them. I graduated in 2004 and I wasn't very close to many of them. Some are about daredevil sports and others about high society dinners or random house parties. These aren't normal events either. Crazy animals and decorations and random stuff happens throughout. Last night I had a dream about a classmate of mine that passed away our sophomore year. It had several classmates in it and we were all on a scavenger hunt in the woods and country side behind someones house. He was my team partner and we ended up jumping fences and running around just yelling and laughing. Then it jumped to us in a car driving in a big city where he kept having to turn around because he was going the wrong way. The road kinda looked like a hot wheels track too, but surrounded by city. Anyone have any idea why I keep having dreams about old classmates? Also, any idea what this dream from last night means? I have my own guesses but i would just like to have other opinions, maybe someone else sees something I don't. Thank you.

• Answer:

  Because you've been in class with them before.