While playing the giver in the "doggy style" sex position, insert your thumb into the rectum of the reciever.
I Kentucky thumb'd your girlfriend last night.
Scott's rn50 blew up so he put a Kentucky thumb in it.
After she came over last night I gave her the Kentucky thumb
A sex position in which one of the persons uses their thumbs to poke/fuck her ass or pussy.
“Oh yea, your getting the Kentucky Thumb tonight.”
A meme created from the insanity of what happens when you fire faulty SLAP rounds and you gotta shove your thumb in the hole your gun just made
I was doing her doggy when I decided to slip her the Kentucky Thumb
When you shoot a women in the neck during sex and proceed to violently fuck the shit out of her neck hole with your thumb shaped dick.
"Hey did you see that Brandon Herrera porno where he gave her the Kentucky Thumb?"
"No Brian. Why the fuck would I want to see that"
When you are having doggie style sex and she keeps farting soEdna you stick your thumb in her ass to stop the gas leak.
Edna ate cabbage before bed last night and she had the wind so bad I had to give her the Kentucky Thumb.
The Kentucky thumb is when you shove you’re thumb up a girls butthole during sexual intercourse
Give me the kentucky thumb daddy!