When you're hitting it from behind and your slap her ass, to which she responds by yelling "just stick a thumb in it!"
by Captain Hazelwood May 20, 2021
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
by Red-50 May 20, 2021
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
Refers to Scott from Kentucky Ballistic's near fatal injury from a .50 BMG explosion that was averted when he put his thumb into a hole in his neck to stop the bleeding.
by BillNyeTheWesternSpy May 20, 2021
She had taco bell earlier in the day, but the good ol' Kentucky thumb will prevent any accidents from happening in bed tonight.
by awesome gamer. May 20, 2021
i gave her the Kentucky thumb
by rico the destoyer May 20, 2021