It's a life truth, impossible to escape from, along the lines of death and paying taxes: people always make funny faces on roller coasters. The inclusion of cameras that snap your picture right at a certain key moment on the ride, while more than likely invented as a "keepsake" to make more money, has yielded hilarious pictures that will continue to exist in all infamy on the internet for ages. In fact, one of the funniest NSFW websites I have ever come across (Flash Mountain) details a craze amongst Disney patrons where a female flashes the camera right as the flash bulb captures a moment for purchase at a kiosk. Oh, and be careful of that link because it does involve nudity. However, as noted on Snopes, if someone's boobs do pop out, apparently you can ride Spash Mountain again for free. However, its racist Br'er Rabbit iconography is still present. Open to debate, I suppose. In any case, before I go down another tangent, here are some of the funniest rollercoaster pictures that I have seen. As always, click to enlarge.