by Durban Bictionary 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

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

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

A Kentucky thumb is When you go out shoot you your 50 cal. Cone in and stick your broken thumb into her
by slopokedj May 20, 2021

The common technique used to save relationships lacking from spice in bed, This move was invented by the legendary Guntuber, Kentucky Ballistics, after he saved his own relationship with living By using the Kentucky thumb
"she was about to leave me for some bearded ak guy , but i used the good ole Kentucky thumb and she gave me those big ole dough eyes"
by Fenrir FireStar May 28, 2021

by Not Guitarist Ryan May 20, 2021
