When you really want to have sex with your girlfriend, but your penis wont work. first you say "ohhhwa!", then she says "OHHHWA!!", then you role over and go to sleep ashamed.

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.