I was giving a Knifw safety class to a bunch of S.O.S.S.O.S kids ages 5 years old to 16 and their adult parents.
Everything was going fine and everyone had handled and pass a very sharp knife back and forth to each other ensuring that the other person had the knife firmly in the grasp and said "

" before the person handin the knife let go of it.
A few more safety tips and then on to sharpening. Every thing went well as I was explaining how important it was to be paying atention to what you are doing while sharpening a knife. While I was talking to everyone, I lifted my eyes to gaze upon the attendees and it happened.
Sliced my thumb and it started bleeding and bleeding/ Embarrassed but not missing a lick, I explained,' See what happens to you when you are not paying attention to handling a sharp object.
I met one of those youngster, Now a young adult, and he reminded me to my embarrasment(again), of that incident and that he has since been teaching young Cub Scouts how to handle a knife from their Bear book.