When you blow up your thumb with explosives so it swells and needs stitches, in order to use it sexually because your dick isn't big enough for her.
She was going to leave me because of my micro penis. So I threw some SLAPP rounds down range until my 50 exploded. Now my Kentucky thumb will keep us together for 2 more weeks.
by Kentucky Thumb May 20, 2021

When you stick your thumb up your anus and You crack your thumb to where it hits the gspot and you splooge all over
by Zane10110 March 26, 2025

In Messaging, a subtle inquiry as to whether the other party composes text at the same speed he or she composes thoughts.
This is not a trick question. It's a week late, where's my package... (long pause) Cat got your thumb?
by Zappin' Nap April 29, 2021

by XxXsexboiasiangirlover42069XxX August 8, 2021

While having sex in the doggie position, a man will slap his partners ass and immediately shove his thumb in his partners ass
Yea man, last night was crazy in bed. We were going hot and heavy until i gave her the "Kentucky thumb"
by Gunther05071 May 20, 2021
