by Anothertrenchcoat May 20, 2021

by N0secondbest May 20, 2021

The use of a thumb to plug an anus after generously filling it with semen, as to not let it leak the life juice.
by BBQalbatross May 20, 2021

In a word, cock. Or dick. Or whatever nomenclature you want to use to describe your penis (especially when it’s combined with a mom socket).
“Look, I know we’ve been dating for a while, so would you grant me the privilege to consensually use my daddy plug on your mom socket?”
by RamCat Jackson December 6, 2021

by NutzinyoMOUth April 6, 2022

it is when you are having sex with your female partner and you stick your thumb up her ass or her vagina
by kingfatty1 May 20, 2021

A form vaginal or anal play, using ones thumb to "plug up the whole." This term is inspired by the popular YouTube channel Kentucky Ballistics. After suffering a nearly fatal .50 caliber related accident, the YouTuber stuck his thumb into the hole in his throat. So the term "Kentucky Plug" means to stick your thumb up your partner's hole, and plug it almost as well as Kentucky Ballistics plugged his throat.
by mydoodda May 20, 2021
