There are many ways to peel an egg. It is analogous, in that way at least, to skinning a cat.
The hydraulic method is satisfying, as demonstrated in a quick video.
Another video, made by a different person, shows a more traditional way to peel an egg quickly. Yet another video, done by this same entity, shows how to peel a raw egg.
(Thanks to investigators Fred and Moxie Frederickson for bringing at least one of these videos to our attention.)