The Kentucky Plug is a sex position where the dominating partner puts his thumb in a non natural hole during the act: Stoma, open wounds, etc. This of course refers to Kentucky Ballistics and the 50 Cal SLAP round interesting where he was required to stuff his thumb in his neck to stop the bleeding.
Verb: Johnny was hitting it from the front when he Kentucky Plugged Charyl's Stoma.
Noun: He nicked an artery after giving me a kentucky plug.
A sexual act where during sex, usually on a table top, where the giving partner blows their load inside the other. Then, they use their thumb to promptly jam into the hole, to keep the fluid from leaking out, until medical services arrive.
The Kentucky plug is a sex position involving the use of a thumb that went through hell being shoved up the partners rectum, invented by Kentucky ballistics after his thumb had veitnam flashbacks.