A euphemism for a sex position in which an individual has a thumb stuck in their butt. This term was popularized in late May 2021 by YouTuber Brandon Herrera after his fellow YouTuber Kentucky Ballistics saved his own life by sticking his thumb in his severed jugular vein.
Inserting your thumb into the asshole of your partner similar to how you stick your thumb into your jugular when the slap rounds I love a little bit too hot. Popularized by the popular YouTuber Kentucky ballistics