How to Dodge a Blue Shell in Mario Kart DS

I previously thought this to not be possible:

Okay, so you’ve heard about it, but do any of you know exactly how to do it? Whether you feel you need to learn this tactic to achieve the glorified 3 star ranking, or you just want to look cool in front of you friends, learning how to dodge blue shells is far too important to pass up.

They have video and everything!