Once upon a time, there was a female brain cell which, by mistake, happened to end up in a man's head. She looked around nervously, but it was all empty and quiet. "Hello?" she cried, but there was no answer. "Is there anyone here?" She cried a little louder, but still no answer. Now the female brain cell started to feel alone and scared and yelled: "HELLO, IS THERE ANYONE HERE?" Then she heard a voice from far, far away... "Hello -- we're all down here..."