If there's one technique that every motocrosser on the planet wishes they could master, it has to be the art of scrubbing speed off of jumps.

The scrub whip is a relatively new stunt to the world of motocross racing and just playing around but in a real motocross race the whip can actually decrease your lap times by whipping your motocross bike into the proper position for the next set of turns.

Check out the video (shown left) of the Best Scrubs and Whips.
The professional motocross riders of course know how to perform the out-rageous or sick whips, but in a race where money and points are on the line they tone the whips down to only how much they need to get the motorcycle ready for the next obstacle.

The How To Secret By James "Bubba" Stewart (shown right photo)
Hit the jump that you want to scrub at the opposite angle that you're going to fly once airborne.  If you're going to lean the bike to the right in the air, approach the lip angling slightly toward the left.

Just before you leave the face, turn the front wheel back towards the right.  This will cause your bike to whip back towards the direction you want to fly in the air.  As you turn the front wheel, it will begin the slide or wash-out.  This will feel really weird at first, but after you practice it for a while, you start to know just how far you can safely slide it out before crashing or losing control.

Grip the bike hard with your knees and lower body, putting more emphasis and weight on the opposite side you're scrubbing on.  For example, if scrubbing to the left, put more weight on the right side of the bike to keep it stable.  By flicking your bars the other way on takeoff, your bike will automatically straighten itself out in the air.

Once you're flying, just concentrate on landing straight and getting back on the gas.  Whipping is not a technique that requires much muscle mass, because when you're weightless like that, it's pretty easy to get the bike back where you want it.  It is is the fastest way to fly.