Rider Takes Flight Involuntarily [Video]
Now, it's really hard to tell what happens in this footage prior to the rider hitting the curb and becoming airborne. While some were quick to say that the fellow is probably a beginning rider doing some mph over his skills' limit and lost control of the bike, we can also assume that his trajectory could have been "influenced" by another motorist.
The footage apparently comes from Russia, and knowing how erratically some chaps drive/ ride there, there's no way we can rule out some cutting off having taken place in the camera's blind spot.
Of course, there's also the possibility that the guy simply did not see the curb and rode directly into it. Add in a sip or two of booze and there you have it, the flying Russian.