The Urban Sherpa keeps a collection of stories and curios filed under Mythic Proportions.
Air Pocket 
December 18, 2008

You're going through your day, going down the street, going about your business, and then suddenly out of the blue, you get smacked with missing someone so much that you drop 1000 feet, like in an airplane. You didn't see it coming. You spill whatever you were holding. You think you might throw up. You lurch into the person next to you, and then right yourself, and try to resume whatever it is you were doing, ignoring the adrenaline and the queasiness, though your mind is now somewhere else, and you can't quite shake the feeling of falling...
