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 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"
The Kentucky Thumb: The Sexual Act of Sticking your thumb into ass of a person before they shit
Brandon: Bro I Gave Scott the Kentucky Thumb Last night
Donut: Dude that's so hot, you should do me next
The act of sticking your thumb into a smaller hole to fill it. Named after the youtube creator Kentucky Ballistics in honor of his thumb that saved his life.
Give em the Kentucky Thumb and just put a thumb in it.
For when she is on her period and you finger her with your thumb
Scott: “After she blew, I gave her the ol’ Kentucky Thumb!”
Brandon: “Wow.”