by Biggaybear April 2, 2013

While playing the giver in the "doggy style" sex position, insert your thumb into the rectum of the reciever.
by The Cryomancer May 20, 2021

When you insert your thumb into a Connecticut girls ass while hittin it from behind. Giving you leverage for more thrust.
by Phat56Pat January 27, 2023

by keeen7 May 19, 2022

A mid to late 30s white male with a receding hairline, and to top it off a head shaped like a thumb.
by Ladyford September 23, 2017

"yeah man she was on her period, i gave her the Kentucky Thumb on accident"
"His gun blew up, that Kentucky Thumb saved him"
"His gun blew up, that Kentucky Thumb saved him"
by NoticeMeBrandon May 20, 2021

by iamtherealalberteinstein May 8, 2022
