I actually did ride an angry bull elephant in real life in the jungles of Chitwan national park (https://en.wikipedia.org/wiki/Chitwan_National_Park) in Nepal when I was in 7th grade. I was on the elephant along with its mahout (controller) and my parents and let me tell you it is not fun. I saw it topple a boat full of passengers over (thankfully they stepped out into the river before he could do any damage and the river was 2-3 feet deep).

Apparently, it was mating season and he didn't like being separated from his female when we started the ride. The mahout eventually brought him under control but it was an experience worth remembering none-the-less.