Hope your finger has healed up well from that unfortunate stabbing incident, just did something similar with my middle finger and a utility knife. Tried snapping off the top segment so I could use the next blade but it slipped and, not being in the kitchen, I wasn't thinking about its knife-like attributes so the grab impulse made a mess of things. To make it even dumber, I'd been gripping the used blade with some pliers with the idea that it'd be safer but if I'd done it the usual way (which I think of as somewhat dangerous), I probably would have been paying more attention and might not have dropped it in the first place.

Good news is that the next blade is definitely sharp, bad news is that now it has a taste for flesh. Oh well, at least my tetanus is up to date and it's not a poop knife like in that one story from the old place.