You're walking around in a school when all of a sudden you look down and realize you forgot to put on pants! Also, there's a huge test in your most important class (that you didn't even realize you were enrolled in) that you haven't studied for at all. You're running around trying to find your classroom but are then suddenly unable to take a single step. And then you wake up.
As it turns out, there are several types of dreams that are common to people all over the world. And, of course, because the human brain is a marvelous thing, there's usually a deeper meaning to each of those dreams. Here are 17 of the most common dream types and what they may mean for your waking life: