1 definition by Sliding Bandit
As defined by the AK guy, a life-saving thumb that enters your jugular to stop yourself from bleeding out after firing an over-powdered .50 caliber SLAP round which explodes your bolt action Serbu RN-50. This thumb is necessary to saving your life since a fragment of the exploding bolt action rifle has lacerated your jugular, so without your Kentucky Thumb you would've die on the interstate driving to the nearest hospital as your father speeds past triple digits in your Silverado
by Sliding Bandit May 21, 2021