A sex act where the thumb is used as a butt plug. Referenced to Youtuber Kentucky Ballistics who had to jam his own thumb into his neck to keep from bleeding out.
The girl I hooked up with last night was totally stoked for the Kentucky Plug! Said she never came so hard!
A sex act consisting of inserting one's thumb into any orifice of one's sexual partner; loosely inspired by an incident involving the YouTube Channel "Kentucky Ballistics" in which a .50 caliber rifle exploded as he fired it and he had to put his thumb into the injury on his neck to survive.
Hey bro, I gave that girl from the bar the KentuckyPlug last night and she loved it.