A exciteing sexual move! When he/or she thrusts his/or her thumb into his/or her partners anus with the force of a 50 cal "Slap" round. 9/10 times this move will result in blindness for both partys.
"Jeffs wife had been walking into everything. She lost her site after he gave her the Kentuckyplug last night"
During intercourse, you say "what's up everybody my names Scott and we're going to do a penitration test today" and jam your thumb in a hole of your choosing
The act of using your thumb to plug any orifice, while you SLAP the shit out of your partner. Inspired by a horrific shooting accident with ridiculously hot .50BMG Rounds.
Had to give 'em the KentuckyPlug, shove my thumb in 'er throat while I slapped her ass red.