1.   But she went down like a sack of spuds and cracked her head open.

2.   He slipped and cracked his head on the steps.

3.   I slipped and cracked my head on the door.

4.   Jim cracked his head on the bottom of the bunkbed.

5.   He cracked his head on the pavement and was knocked cold.

6.   He cracked his head on the trapdoor beneath the golden pavilion and fell to the floor like a lopped tree.

7.   The villain stepped in front of me, two of the thugs he always kept in the tavern to crack the heads of noisy revellers now standing behind him.

8.   They will crack their heads on the low door frame and be forced to stand bent forwards beneath the slope of the ceiling in attitudes of unsuitable humility.

9.   When he slipped in that muck he could have cracked his head against the side of the lift shaft!

10.   But Bush needs a wartime CIA consigliere to crack heads, not a go-along-get-along guy.