Once upon a time there was a female brain cell that happened to end up in a man's head by mistake. She (the female brain cell) looked around nervously but it was all empty and quiet.

"Hello?" she cried, but 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 down here..."