Google-fearing mongerals who eat out the brains of the undead, zombies, vampires, etc. Good pets to have near the end of the world, unless one is trying to fight against Skynet and the Terminators.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.