A sex act where you shove a thumb in it(it being any hole) the same way Kentucky Ballistics shoved a thumb into his wound after his gun exploded.
Guy 1: I gave her the Kentucky Thumb last night
Guy 2: How'd it go?
Guy 1: Well I stopped her bleeding from her period
Guy 2: How'd it go?
Guy 1: Well I stopped her bleeding from her period
by A SLAP round May 20, 2021

Classmate: "Has anyone talked to her about the break up?"
Me: "Na. She's been thumb fucking her phone all day and won't talk to anyone."
Me: "Na. She's been thumb fucking her phone all day and won't talk to anyone."
by MaddHatter June 27, 2016

by b chun ny8gryno July 13, 2022

by Sladewilson122 May 20, 2021

by Kentucky man May 20, 2021

Putting a thumb in your anus to stimulate the vasovagal response to the point to slow your heart rate down to prevent shock or death from bleeding, can also be used for pleasure also.
by Nightmed May 20, 2021

-Hey, I just saw that second picture. Was the surprised look on her face because of the huge selection?
-My bad, thumb fumble
-My bad, thumb fumble
by spenger April 26, 2011
