Inserting a life raft into the anal cavity of a willing male or transsexual while skydiving out of a attack chopper in Iraq

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.

The act of singing while wearing native american regalia as a result of being absolutely fucking plastered.

"A cherokee singing karaeoke"