High Speed Wheelie Fail [Video]
The rider in this video (the one in the black leather jacket) tries to imitate one of his buddies, and succeeds, for a second. It’s clear from the start of his wheelie that something is a bit wrong - his balance doesn’t seem to be as good and as stable as that of the other riders and the the inevitable happens.
Of course he was going to fall. Wheelies should not be treated lightly nor should they be attempted until the rider is fully accustomed to his bike and has accumulated sufficient experience riding it, without doing wheelies (at first).