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 20, 2021

noun. when sitting on a cold hard surface (e.g. metal folding chair) you fart the type of fart where a quarter could pop out of your asshole and it sounds like a little man is blowing kisses out your asshole.
by rayrodrey February 25, 2003

by Knuckleberry Zing August 19, 2013

When you use someone elses’s hand for masturbatory purposes. They just sit there unmoving & limp while you grasp your hand around theirs and use it to beat your meat abrasively.
Brandon let Anthony use his hand for a Kentucky Poorboy, so he could feel what a full size hand feels like in the bathroom stall..
by xoxoeleo November 9, 2019

by NeverLookBothWays October 15, 2019

Kentucky thumb, the act of blowing your firearm up with an old army round and inserting your thumb into the wound to stop the bleeding
by Lemomlimepie6 May 21, 2021

Things were getting hot and heavy with Megan last night so I had to give her The Kentucky Plug to keep the sheets from getting soaked.
by R3a1ityD31usion May 20, 2021
