Most of my dreams are me wandering around old college campus buildings or buildings where I used to work, looking for the rest rooms.
Invariably the rest rooms are closed or no longer even exist any more. So I keep looking. Other floors? Other buildings? Maybe a big tree or clump of bushes to go behind? Nothing.
Eventually I wake up and realize I need to get up and relieve myself.
Probably no earth shattering revelations there...
At least you wake up first.