when you are sitting on the toilet taking a dump while getting a blowjob... and right before you bust a load you drop a huge dump and the water from the toilet and ur jizz hits the girl in the face at the same time

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.