Back in '94, while I was in Korea, I had my brother pick me up a Suzuki SP600. He sent me pictures of it and I drooled over them for five months before I could get home. It was older, but in pristine condition.
Got back home, went to his place to get it and we went riding trails in the Rampart Range area of Colorado. I hadn't ridden for four years. Within 100 yards of leaving the first trail head, I tried to get around a rock on a slope and wound up falling over and knocking a fist-sized dent in the gas tank when it hit the rock.
I never did get it fixed. I felt really stupid and was extremely pissed off at the time, but now when I think about it, I always laugh.