The act of slamming 4 fingers minus the thumb inside someone's asshole with such force it dislocates the thumb leaving it in an upright position.
"Oh man i saw scott kentucky plug brandon so hard the other day they had to put scott's hand in a cast!"
by The stingin roger May 20, 2021

When you're partaking in intercourse (ideally doggy style) , and you shove a .50 BMG round into the prostrate participants anus, followed by your thumb for maximum depth.
Man, I was railing this chick last night and she said she liked guns, so I took out the .50 BMG and Kentucky Plugged her ass
by MrWine May 20, 2021

A sexual act that involves a male inserting his thumb deeply into the genetalia of a female. This maneuver can be done while the female is on her period to maintain authenticity to the incident it was named after.
"My husband and I were getting frisky yesterday. He was sad when I told him that I was on my period but soon got excited once more when I offered for him to give me the good Ol Kentucky Plug."
by Goobles168 May 20, 2021

WHEN YOU HAVE A SEVERED ARTERY AND NO WAY TO STOP THE BLEEDING, PUT YOUR THUMB IN IT. ALSO KNOWN AS, A KENTUCKY PLUG.
HEY DID YOU HEAR ABOUT KENTUCKY BALLISTICS HE HAD TO UES A KENTUCKY PLUG IN HIS JUGGULAR TO STOP THE BLEEDING IN HIS NECK
by ROCK_HOPPER May 20, 2021

The Kentucky plug is when a thumb goes through the cervix and into the fallopian tubes, the most effective type of birth control. This references the accident Kentucky Ballistics had with a SLAP bullet.
by Mr. Phun May 20, 2021

by BoxFalcon May 20, 2021

by tacxa February 2, 2024
