Noun: A sex act. One partner uses their non dominant thumb by inserting their thumb into the anus of the other partner while giving oral sex.
The dominant partner performs a KentuckyThumb applies pressure to the anal interior with the thumb and places the remaining 4 fingers one of the posterior cheeks, gripping it like a Basketball. All while preforming oral sex on the recipient. This position can be done in either the 69 position or in the standing position.
Is a sexual activity involving the stimulation of the thumb of a person by another person using the throat and may be performed as foreplay to incite sexual arousal before other sexual activities.
The process of sticking your thumb in a wound from shooting a 50 Caliber SLAP round and it horribly wrong or sticking your fattest thumb in someone for sexual pleasure.
“Scott almost died from that hole in his neck! Good thing he had that Kentucky Thumb”