A wor used around individuals with PG-13 ears such as a parent or other adult with the slightest hint of misused authority, as a substitute for a foul word or insult.

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.