I had a blow out the day before yesterday on the front of my fixie. being the fool that I was, i did not seat the wheel all the way in the dropout, and as a result, the brake pads were hitting the tire. when I hit this bump, I heard this hiss hiss hiss, and then there was this sound like a gunshot as my sidewall ripped out. I think that being on a fixe helped a whole hell of a lot, becuase I was going downhill, and therefore able to gently backpedal to slow down. i just held my line until I stopped, then I called my boss to tell her I was gonna have to walk the other two miles to work.