I have been asked that 1000 times at least. I find that people that are actually older ask a lot more dumb and private questions. I usually tell the adults some lie, especially if I have no clue who they are. If it is a young kid I try to tell them it was just an accident. Most of them don't even see the wheelchair. They asked me why I wear wrist splints. I find that hilarious. My favorite response that I have come up with is this, "I fell out of a sex swing, but don't worry she is all right."