I'm showing a friend of mine a "rollover", he says,"that's cool, do it again!" So I procede to do it again, and the pivot pin breaks off as it's rolling over my fingers! The bite handle goes flying and the other handle/blade just fall to the ground. Felt pretty stupid, but it was kind of funny. Kind of mad because I just got this one three weeks ago. I only practice maybe a half hour a day. Guess it was just defective?