Man who knows EVERYTHING. An absolute intellectual with no need for a woman in his life. Not even gay, just smart. Completely independent you’d probably envy him. Rly attractive even though he probably would give you herpes. But this is only because he sleeps around by getting the most gorgeous girls with his looks. That totally contradicted itself, but tuskaneers are like that.

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.