There is no way to beat this arguments. Not even the infamous "no u" can't save you if someone tells you this. Yuse this insult on anyone u downt leik and watch them die a horribly brutal death.

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.