Why?

I had the weirdest dream last night. I’m just going to tell you what I remember.  Like they say in Inception, you don’t know how a dream starts. So I’m going to start from where I think it starts.

(Excuse the lack of full stops in the following paragraph)

 I’m at some fair/amusement park thing, and everyone I know are there and they have stalls and stuff and Charlie McDonnell is there and he’s at the bottom of a roller coaster and he’s about to do a Challenge Charlie and he’s purple and he’s all “I’m really nervous” and stuff and then he goes on the Roller Coaster and he comes down and he goes “Well, THAT was fun” and my cousins get excited and they’re like “Even we want to go” but they’re not old enough but still they go and then I’m like whatever and then I run into Ron and Hermione(Sorcerers’ Stone versions) and they have owls in their hands and they’re smiling at each other and then they release the owls and then owls just keep flying till they reach a beach and on the beach there’s Chase Crawford and he’s with some chick and he kisses the chick and “What Makes You Beautiful” by One Direction (I hate 1D.Just saying) starts playing and it just zooms out like in movies and then I’m in a car and I have a bunch of owls with me and then   I have to go through a tunnel thing and as soon as I get out of the tunnel, I have more owls with me and then there’s a random bathroom(not like a single cubicle. Like the kind in movie theatres.)  in the middle of nowhere and it’s raining and I’m like “Let’s just take shelter here” and then there’s a knock on the door and I open it and there’s Prakash Raj(A Telugu/Tamil Actor) and with him is another dude who I can’t recognize and they’re like “Are they here?” and I’m like “what?” and he’s like “The Owls, Obviously” and I’m like “No. But you can find loads in the tunnel down there” and he’s like “Okay thanks” and he goes away and I’m like “Ohkayy, that was random” and then I woke up.

So basically, the point of this blog post is, Why can I remember one RANDOM dream so vividly but I can’t remember answers to questions in exams? I don’t know. If you do, please tell me.