A sex position in which you stick a thumb up someone's ass after cumming in it to prevent it from leaking out, in the same manner as Kentucky Ballistics plugged his jugular with his thumb

The act of shoving your thumb in your significant other's chest, and vagina; Imitating Scott from Kentucky Ballistics' .50 BMG slap round incident.

The use of ones thumb to cause insane amounts of pleasure for your female partner but inserting it into her vagina.

A sex position in which oral sex is conducted with a thumb instead of a penis.

When have sex with your partner you shove your thumb into the nearest hole like their life depends on it.

Shoving ones thumb two knuckles deep into whichever orifice makes the blood stop dripping.

The Kentucky Plug is a sex position where the dominating partner puts his thumb in a non natural hole during the act: Stoma, open wounds, etc. This of course refers to Kentucky Ballistics and the 50 Cal SLAP round interesting where he was required to stuff his thumb in his neck to stop the bleeding.