No...
but i have completely sliced off the end of one of my fingers once...
Ahh, LOL. how?
i'd spent a whole evening sharpening a very nice knife, and then decided to chop an apple to test it.
it was so sharp that it went straight through the apple and my finger without me noticing.
i didn't realise i had cut myself until the cutting board was basically covered in blood.
The end is still a weird shape