When something malfunctions by virtue of not existing at all. Taken (but not precisely) from "Hitchhiker's Guide to the Galaxy". In the original usage, a spaceship existed for a while and then spontaneously disappeared.
Bob: Can I borrow your car?
Bill: Nope. Sorry. It's having a total existence failure.
In swimming, when one dives into the pool when starting a race and his or her goggles immediately completely fill up with water or fall off, usually ending up somewhere part way down the person's face.
Brian: "Damn, dude. What happened during that race? You're time was freaking slow."
Tom: "I experienced total gogular failure and couldn't see shit."
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).