Don't hit them on the head with the 35th too early.

Then we were running for the back room and something hit me on the head.

If you asked why you'd be hit on the head.

Also, the hair on her head can be used in similar ways.

They hit him some more and sat on his head.

What may fall upon him he has brought down on his own head.

He has but one human hair left on his head.

All the Press of the world would be coming down on his head.

She had the same old red board on her head, however.

Must have hit the floor on his head or something.