I was chilling in Blue Skies and decided to crash in the hang out there. In the morning, instead of hopping on the bus, I decided to take the path that leads to the side of school near the parking lot.
Well, you know how there's little cliffs/ledges in that area? I fell down one and the kart went ballistic. But it soon settled down and... was halfway merged into the ground. Poor Jimmy couldn't see a damn thing since his head and half his body were underground so steering the kart was pretty damn hard to do.
I got a kick out of this and hoped that the kart and kid would be completely submerged, but after a while they both appeared on land like nothing special happened.