Kentucky Plug

When it is her time of the month and you stick your thumb in to stop the bleeding while still continuing in a feverish fashion down the dirt road.

Or

A life saving technique used to plug an artery in an emergency situation particularly good during shooting a sketchy custom AK-50 or Slap Rounds

I finally got my hands on Brandon Herrera's AK-50 prototype and it exploded on me. I had to use the Kentucky Plug all the way to the hospital to save my life.