When it's "that time of the month" and the flow is heavy, so you reach behind yourself and down between your legs to plug it with your thumb, and proceed with anal.
Scott was bleeding so bad from his .50 SLAP round failing, and I didn't have a first aid kit ...so I decided to just give him the Kentucky Plug. I probably should've stopped with just the thumb, but the look on his face when I started unbuttoning my pants was priceless.
by Daffy723 May 20, 2021

Inserting your thumb inside someone's ass, vagina or jugular vein. Usually it is done by men or women with large round thumbs that have thin dull fingernail, it is also used if your jugular is severed or slightly punctured.
by echo_charlie May 20, 2021

The Kentucky plug is a sexual act in which you will start having sex normally with your girlfriend, and halfway into it you will play 4:29 on Kentucky ballistics video my 50 cal exploded as you shove your thumb into her ass as hard as you possibly can.
by IamOverlord999 May 20, 2021

by Brandon Herrera fan May 20, 2021

a sex position involving blowing your sexual partner up, then stuffing your thumb into any random hole.
bro, did you see how Scott committed the Kentucky plug last night? never knew you could do it on yourself!
by asdfghjkl;lkjhgf wedrftyuiryf May 20, 2021

by Shy-Rocky May 20, 2021

she was ready for the kentucky plug..
by Daddy Klash May 20, 2021
