The act of two partners performing sexual intercourse while dancing on male participants grandfather's grave.

List of requirements: Participants must consist of one male and one female. Woman must use female condom, and man must use male condom. Both condoms must be rainbow colored, inside out, and broken, for maximum experience. five little children must be watching from a safe distance of ten meters.

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.