The act of penetration with the thumb. Similar to the act of plugging a hole in your neck with said thumb. The most badass thing a man can do.
by Soul0rison May 20, 2021

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"
"No Brian. Why the fuck would I want to see that"
by Solver20 May 20, 2021

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
by Isaak24 May 20, 2021

by Fishgoder May 20, 2021

by Chrnc May 20, 2021

"Brandon Herrera told everyone on YouTube that he loves the Kentucky Thumb. "
"After we used the dildo mounted a reciprocating saw last night, I had to give her the Kentucky Thumb"
"Just put a thumb in it... a Kentucky Thumb in it."
"After we used the dildo mounted a reciprocating saw last night, I had to give her the Kentucky Thumb"
"Just put a thumb in it... a Kentucky Thumb in it."
by Newton1391 May 20, 2021

by ThatUnluckySlapRound May 20, 2021
