Jelly and blood–yikes.
I also have a nasty scar on the top of my left hand from my restaurant days. I needed to get some green peppers out of the walk-in fridge and the box they were in was stacked beneath a few other boxes of stuff. Being in a hurry, as usual in a restaurant, I didn’t bother to move the boxes on top and just slid my hand into the pepper box. Well, the weight of the other boxes on top made it tight and when I pulled out my hand with the pepper in it, one of those industrial staples on the lid of the box caught the top of my hand and ripped into it good. No time to whine–wrapped it and kept cooking. Just one of many battle scars.