(Noun)
Something that creeps you out. A word, concept, smell, taste, sensation, or otherwise that makes you feel uncomfortable in your own skin.

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.

the feeling of adrenalin rushing up your spine when scared.