The process in which you have casual conversation while taking a dump. This person can be your spouse or your neighbor/anyone who can withstand the odor and not be offended. The idea is to find someone who will chill while dropping the kids at the pool.

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.