Using your thumb (primarily someone from Kentucky) to plug any holes on the human body whether in sexual or non-sexual context.
Brandon: Hey Scott, I gave my wife the good ol' Kentucky thumb after your "incident"
Scott: That's great man, I'm happy to hear that.
Scott: That's great man, I'm happy to hear that.
by Jaybran61 May 20, 2021
by Durban Bictionary May 20, 2021
Taken from a faulty SLAPP round the "Kentucky thumb" is when the man is about to conclude the sexual act and he jams his thumb up her arse.
by Gerald4War May 20, 2021
When you're nailing your sister from behind and you slip in the back "accidentally" so you shove your thumb in her asshole so blood doesn't get on your bed.
Had an accidental intrusion with sis last night and had to give her the Kentucky thumb to keep the sheets clean
by Imprezaraptor May 20, 2021
1 Kentucky ballistics shoving his thumb into his neck to stop the bleeding after his 50 cal exploded and cut his jugular in half
2 The act of sticking you thumb into a girl's butt
2 The act of sticking you thumb into a girl's butt
1 brandon: hey did you see the video kentucky ballistics 50 exploded?
Cody: yea that's and the reason he's still here is because he gave himself the kentucky thumb
Cody: yea that's and the reason he's still here is because he gave himself the kentucky thumb
by Derpytaco23 May 20, 2021
Damn it's bleeding bad give it the Kentucky thumb or Damn she's bleeding bad give her the Kentucky thumb.
by anonymous May 20, 2021
The act of, rather than sticking your thumb in her ass while you're fucking her, you pull out, shove it in her ass, and plug her vagina with your thumb
by Boost_and_chill May 20, 2021