The term used to describe a child that causes a teacher to get fired for throwing them out the window or punching them in the face; can also be used to describe the person who would get you "fired" in a work environment because they would be the one who makes you snap.

Adj. Something that is expected to have a long lifespan by virtue of having existed for a long time, based on the lindy effect, named for the New York restaurant Lindy's, coined by Albert Goldman and popularized by Nassim Taleb.