"If we meet any guards, you tell them to stay away or I'll blow your head off."

It would be someone else who pulled the trigger and blew his head off.

For an instant, she thought the top had actually blown off her head, but then it was over.

"I hear you tell him you'd blow his head off?"

I hadn't been very far from having my head blown off.

The only answer will come when I blow my head off.

If you keep very still I may not blow your head off.

If you understood the big picture it'd blow your head off.

And the one with the gun would have blown your head off.