Nearly had a moment the other day, but snapped out just in time
Had an horrible one about a month or so ago though - came to my first set of lights on my morning commute having not had too much sleep at all and was midway through a daydream, when I realised that I'd stopped at the lights without unclipping my left. Slowly but surely, the world turned sideways and unluckily enough, I managed to rip my rip my right foot out which meant that, instead of falling over, the frame landed right on the side of my kneecap, leaving a lovely little cut. All healed up now, but if I fall asleep on the sofa with my leg folded over the arm of the chair, I wake up with a terrific pain. Woke me up though!