This newly-created article was immediately tagged for deletion. As a "possible hoax".
Sorry to tell you Jimbo-Masturbator trolls something......jack jumping is a very real thing.
I've seen people do it on ski slopes. Mostly in New England.
In fact, there's at least one company making jack-jumper chairs. Video, video. Blog.
It is NOT A HOAX, morons. No.
Get out of your moms' basements and go out and see the world.
You might learn something.