verb: to overexplain something commonly known/understood to people for the sake of notoriety and to show off your intelligence

often comes off as pretentious and annoying like the person using it

it's like mansplaining but for kamala harris haters

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.