When a man of African Decent that is bald and has glasses wearing a blue plaid shirt is inside of a McDonalds and says "should I dip my burger like this, like this, should I dip my burger like this" and proceeds to eat it after covering the entire thing in ketchup.

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.