Carving a pumpkin with a tactical knife? Only once and I broke the blade, but I have a pretty good excuse.
It was 1966 and I was five years old. Like any normal red blooded American boy back then I loved BB guns, pocket knives and military stuff. One day when helping my father clean the garage, we found the switch blade that his older brother had purchased for him as a souvenir in Japan on his way back to the States from Korea.
"Can I have it dad?" I asked and my dad said sure but "Don't stab yourself." I was so proud of that knife. It was cooler than anything my friends, or even their big brothers had. I actually brought it to "show and tell" at my kindergarten class. And no, the teacher didn't care, the school was not placed on lockdown and the Earth did not stop rotating.
I never cut myself or anyone else and I kept that knife in perfect condition despite flicking it open probably ten thousand times but I made the tragic mistake of trying to cut our pumpkin and promptly got the blade stuck. While working the blade back and forth trying to loosen the grip, I slipped and pushed the blade laterally against the pumpkin snapping the blade in half. I was truly heart broken and I remember that day 48 years ago like it was yesterday.