My head banged on a rock and everything went black.

His head banged hard, and he lay stunned a few moments.

The vehicle made a sudden turn, and her head banged against something hard.

My head was banging big-time and I wanted to get on.

The copilot's head banged hard against the window, stunning him.

His head banged against one of the bars as he rose through the grating.

His head banged against the wall when they reached the landing, but for some reason it didn't hurt at all.

But the wall was slippery and Harry slid down, banged his head.

She slapped him hard across the face so that his head banged back against the wall.

Both of the men whose heads had banged were sunk to their knees.