Maybe she was hit on the back of the head.

Something hit me on the back of the head, here, and I went out like a light.

Sometimes you can tell even more by what's on the back.

Looking on the back of my bill is not much help.

Had an open cut on the back of his left hand, too.

I felt his hand on the back of my head.

She set her free hand on the back of his head.

On the back was a list of people he gave thanks to.

What do you think to the board game on the back?

Even when you're turned or on your back you can hear him.