When you stick a 50cal into a girls "crevices" and pull the trigger. It will not fire, but will explode and only damage the man's thumb.
"Scott sure did perform the Kentucky Plug with his wife that night! Sure hope his thumb is still ok..."
by Pooptit May 20, 2021
by Gage-. May 20, 2021
by Edward Edmund McFrankshire May 20, 2021
When you and your lady or gentlemen friend are getting intimate, and you stick your thumb into them, in assumably a nicer way than a man with a serrated vein would stick their thumb in themselves to prevent blood loss.
by Ptd007 May 20, 2021
by TheNextEpix May 20, 2021
Sexual position involving the judicious application of one partner's thumb in a partner's orifice. The orifice in question need not be original equipment to the receiving partner.
by Dregan's Balls May 20, 2021
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