A very small percentage of guests have hurt themselves on purpose and only marginally, in an attempt to implicate Disneyland later with a frivolous lawsuit. Most of those never succeed. I recall one such man, who jumped out of the Big Thunder Mountain Railroad at the final bridge just before the dinosaur splashdown. Now this is a straight stretch of track, mind you, and one of the slowest sections of the ride, yet the man claimed he was violently thrown from his car. I never learned whether the injury was in fact real or bogus, but the whole thing seemed pretty contrived at the time.
Guests reveal their idiocy in smaller ways as well.
They ask dumb questions, almost without end. I m not one of the people who get sick of the bathroom question, however. I have patience for that sort of thing. But less so if I m standing literally at the bathroom entrance. Actually, they do this for any costume, no matter how outlandish, including the one you see above.