I was riding to work on the DiamondBack Voyager II snow bike that I had built up, for that season. I had the 26"x1.95" studded tires on it, and the bike was working great on the icy roads. I was 3 miles from home, heading downhill on Dahlia, and everything was going smoothly.
I made the turn at 4th, in order to jog over one block and hit Eudora, which actually crosses 6th, unlike Dahlia. I accelerated on 4th and, since the bike had been riding so normally, I blanked out the fact that there is always a lot more ice on that shaded stretch of street than anywhere else on the ride. I got to the left turn on Eudora, and leaned into it at speed, as if I was on dry pavement.
The bike stopped pretty quickly when it hit the ground. The pedal dug into the ice and acted as an anchor. I had no such anchor, however, and I continued on down the street for about 25 yards, laughing all the way (as the song says).
I got up and started walking toward the bike, and promptly slipped on the ice and fell down. It took a few moments to get back to the bike, and get rolling again. I can assure you that I was a bit more careful on the turns, from there to the lab.