On my ride back to the office after having lunch at home I was hammering and once I reached the crest of a modest incline downtown I tried to shift up to fly down the other side. I am riding my 70's Zebrakenko Storm (nicknamed "Kaminari" or "Storm of the Gods" in Japanese, thanks to the help of a friend living in Japan). The FD is a bit touchy sometimes and today I overshot it and threw my chain, my pedals suddenly spinning freely beneath me. I was right by a bus stop hub downtown full of people, so to save face, instead of stopping to fix it I just quickly readjusted my posture after a slight wobble and coasted the next two blocks downhill to my office. I then walked into the office with the chain still hanging limply from the frame.