When a quite large muscular thumb is used to penetrate a desired orifice, can be used in a sexual manner or just may save your life, but it's mostly for the memes. Comes from when Scott Allen DeShields, Jr., whose YouTube channels name is Kentucky Ballistics, had an unfortunate accident involving his RN-50 exploded causing a piece of shrapnel to sever his jugular. The use of his thumb jammed into the wound cavity putting pressure on his artery is what saved his life. His optimistic humor with the phrase "put a thumb in it" has led to the creation of this term.
by FreshWolfMilk May 20, 2021

by KuleRule May 20, 2021

by Crackerjack121 April 26, 2021

by Whereduhfitty May 20, 2021

When you jam your thumb into a girls vagina. Named after Kentucky Ballistics who jammed his thumb in his neck to save his life.
by SlimGrim602 May 20, 2021

An Anti-Safety device used in historical steam engines, allowing for the elimination of the traditional fusible plug, for the operation of a boiler with less water than conventionaly allowed.
Dat Tweedy Wun Fiddy musta been running a Andover Soft Plug last week because I swear there wasn't a drop of water in the glass.
by ADENGINEER October 15, 2022

When you shove your thumb into her jugular as you’re blowing your load into her eyes, then go break a folding table
by WhereDaAK50? May 20, 2021
