It's embarrassing, I know. To be so thoroughly destroyed by yours truly in Mario Kart DS is a humbling experience. Still, any master such as myself still wants a bit of competition now and then, and thus this video, posted by the folks over at Nintendo of Europe, highlights some of the games' numerous shortcuts and tricks. There are even one or two even I didn't know about (Delfino boardwalk jump!), so with this video in mind, perhaps you'll all fare better in the future. MK:DS won't be back in the rotation for a few more weeks, but the day will soon come. Train, young warriors, and perhaps you might stand a chance.
Oh. And that blue shell dodge at the end is a thing of beauty.
[Update 1: And typos shall inherit the Earth]