When you are having sex without ball cam and you flip yourself 180 degrees while boosting in order to get on top of the other person. If you perform this action correctly with precise timing, you can keep boosting up wards until you are tornado of sex exceeding speeds of Mach 3.

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.