A phenomenon where firing high caliber rounds into ballistics gel from a close range causes the gun's fireball to be sucked into the resulting hole, causing the ballistics gel to briefly flash white.
by iamnottheboss April 30, 2025

Sexual action involving the thumb in the womans Vagina with index and pointer spreading the Labia allowing the middle finger to articulate the citrous. the three fingers form a "K" (as in Kentucky) And thumb acts as a "plug"
I was watching my buddy scott's youtube and he said just "stick a thumb in it" sure enough I gave my GF the Kentucky Plug and had her in a euphoric daze
by SirShadowman May 20, 2021

Sex position. Has to be Scott (Kentucky ballistics) thumb and in some way there has to be slap rounds involved.
by Ak gut May 20, 2021

When you blow up your thumb with explosives so it swells and needs stitches, in order to use it sexually because your dick isn't big enough for her.
She was going to leave me because of my micro penis. So I threw some SLAPP rounds down range until my 50 exploded. Now my Kentucky thumb will keep us together for 2 more weeks.
by Kentucky Thumb May 20, 2021

A sex position in which you plug your thumb into your partners hole to prevent leakage, just like Kentucky ballistics had to !
by TheReelParo May 20, 2021

by Brandon HER May 20, 2021

Man I had my girl over after I went to the range and she was so excited she let me do the Kentucky Plug!!
by alynnjinn May 20, 2021
