What does it mean?

I had a very strange dream last night. I wonder if it has any meaning...

I was driving in my old car, the big beast that was the Legacy. JTB was in the front seat next to me and J was in the back seat. We stopped at a crossroads and an old Japanese lady knocked on the boot window (it was an estate car). J leaned over and opened the boot and the lady climbed into the boot, crawled over so her head was leaning over the back seat and was promptly sick all over J. Then we were suddenly in a castle on top of a hill where my headmaster came along with a sick child and told J she had to take him to my high school before 8.20.

That must have some meaning.