I know THAT feeling. I did that with a Corsair. Never flew one, so I thought, what the hey, just taxi it around a bit until the instructor shows up. Well, I seemed to have been going faster than it looked, because within seconds, it was airborn and climbing. It's amazing how the mind and body reacts when conditioned for "controlled" panic. I got it back down with a minor nose over. I was walking out to get it when the instructor shows up, grinning, he knew by the look on my face what I had just done.