Related:

• You have there hit the nail on the head.
• If you are ever caught in a thunderstorm while playing golf
  he best way to keep from being struck by lightening is to pull out a 9-iron and hold it above your head, because not even God can hit a 9-iron....
• When I nod my head, you hit it.
• Gun control is being able to hit your target!
• I'm grinning from 'ere to 'ere...
• Be careful when throwing a boomerang - you might hit the back of your head.
• Crosis of Borg - Smurf, hit on head with mallet, death is immediate.
• Some people wouldn't recognize subtlety if it hit them on the head.
• Some people in this department wouldn't recognize subtlety if it hit them on the head.