Actually, I was just a knife-licker. The trouble is it was brand new and super sharp. And, I bled. I've eaten apple off a sharp knife with no untoward results.
If it had been jelly, I would not have cut myself. But, why would I have a sharp knife in jelly. Of course, it could have been Miracle Whip. I just don't remember because of the searing pain and blood. There was not a lot of blood, but it doesn't take much blood to know you are swallowing blood!
I was trying hard to stay safe. I carefully put the knife between my lips and a little further back. The "further back" was the real problem and source of blood. Carefully, I drew the knife straight out and felt just a twinge, but I kept pulling it between my lips.
Afterwards, I gave a little, low moan; the friend standing here said, "You didn't really cut your mouth, did you?" He shook his head.
The cut hurt for hours, especially every time I ate or drank anything. The blood stayed for less time but was still strange and distressing.
Don't ever do this! Staying safe could mean not putting a knife in your mouth, way beyond your lips.