Well I originally learned on the dirt, so many drops there because I started when I was still kinda small (8 or 9yrs. old). That, and I sucked at it at first.
When I turned 14, my friend(16) had an '83 Honda Nighthawk 450 that he bought to learn how to ride. He offered to let me learn on it as well, with the expectation that it would be dropped. It was, in fact, dropped many, MANY times. Never dropped real hard or anything, but it had its marks.
Then I had a clean record on my F2 and my F3. Bought my F4 and, believe it or not, rode a girl on the back for the first time. Tried a U-turn and BAM! down she went. No biggie though, just bought a new mirror and handlebar end and got rid of the evidence. After that I had a guy run me off the road and I lowsided. Then about a month and a half later, I totalled the thing. I don't chalk it up to bad Karma though...just the way things happened. Hopefully live and learn, right!!!