Mario Kart DS Easter Egg - Hardware Revision Identification

Turn on your DS or DS Lite. You should see the Health Warning Screen. Touch the screen or press a button to bypass it. If needed, select "Mario Kart DS" on the main menu. The Nintendo logo will come up with a copyright message on the bottom screen. Listen carefully. If you are playing on an original Nintendo DS, Mario will say "Yahooo!". If you are playing on a Nintendo DS Lite, Mario will say "Here we go!". The gameplay is not affected by this.