When you stick the thumb of your off-hand into your sister's ass, while you cover her mouth with the other.
Jethro was enjoying his time with Jenny while their parents were away, so he slipped her the old Kentucky plug just before she came. She gushed more than KB's jugular after a slap round.
by DaddyDingDongs May 21, 2021
Get the kentucky plugmug. The act of using your thumb to seal your sexual partner's vagina while having anal sex on her period, as a way to not get your sheets dirty.
Man this bitch the other night... I don't know I guess it was her time of the month so I had to use The Kentucky Plug on her so I didn't have to wash my sheets in the morning
by Dryphu May 20, 2021
Get the The Kentucky Plugmug. Whenever someone just puts a thumb in any kind of void that requires filling, including but not limited to: an anal cavity, your cousin’s genitalia, the eye socket of an enemy, or your own wound from an exploding firearm
by BasicBassist5 May 20, 2021
Get the The Kentucky Plugmug. by Too So Cray September 11, 2013
Get the Thumb Plugmug. The often disregarded fecal matter that morphs from a once gelatinous substance to a hard, concrete like formation that stops previously liquidized fecal excrement in it's tracks, whereas no further deposition of excremental matter may occur henceforth. (See "poop plug.")
Dangit Johnny! If you don't hurry up I'll surely soil myself! My plug turd is nearing it's expulsion!
by Illicitrampage August 1, 2019
Get the plug turdmug. The Kentucky Plug is the act of sealing your sexual partner's vagina while she's on her period so you can hit it from behind without ruining the bedsheets.
Man this girl the other night, I guess it was that time of the month so I had to use The Kentucky Plug on that bitch. Ain't gonna be washing my sheets today
by Dryphu May 20, 2021
Get the The Kentucky Plugmug. by Dakattack95 May 20, 2021
Get the Kentucky plugmug.