Haha, that happened to me once. I had just gotten a new bike, which was much taller than I was used to. I play a pickup soccer game and then jump on the bike to go home. I stop at an intersection and put my foot down...and it touches nothing; I'd managed to stop next to a pothole. The motorcycle starts to fall over and my foot touches the ground a couple of inches later, but my tired-out leg couldn't take the weight and the bike slumps over as I struggle in vain to keep it upright. Then some woman in the car across the way jumps out and RUNS over, asking if I'm OK and helping to lift the bike off me as I mumble excuses. I thank her and ride off, cloaked in shame.