I was playing a little while ago, when I had just unlocked the skatepark, and was really pleased because I was doing the flying thingy glitch (when you go up the quarterpipe near the green shelter and pull both sticks down and both triggers), and I shot so high into the air, I went over the barrier blocking the side entrance to the school, and landed on the slope going down to the main area. I hadn't unlocked the school at the time, so there were no people in it, just the chalk challenges. Because of this, I did loads of chalk challenges that I shouldn't have been able to, so I shot up the rankings. It was awesome.
Has this happened to anyone else?