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

by brokenvulture May 21, 2021

Named after Kentucky Ballistics 50 BMG SLAP round accident where he plugs his open wound with his thumb. This sex move is done by slowly inserting your exposed thumb into a female's vagina.
by flava-trian365 May 20, 2021

1 - Placing your thumb in the anus of a sexual partner. Most often referenced during the stand and carry position.
2- Using your thumb to plug a leak in desperation.
2- Using your thumb to plug a leak in desperation.
To spice up an already sexy situation, he gave her the Kentucky plug.
After the shrapnel cut his carotid artery, he used the Kentucky plug to keep himself alive.
After the shrapnel cut his carotid artery, he used the Kentucky plug to keep himself alive.
by Ened May 20, 2021

by YankeePenis December 11, 2016

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

A brand new sex position brought to you by Kentucky Ballistics, The AK Guy, and some wonderful memes. also chewing tobacco but that isn't as fun.
"For the love of Christ, if the Kentucky Plug isn't an actual sex position on urban dictionary yet, you guys have to make it one"
by TheSlappiestOfJews May 20, 2021
