Let's see...I can't tell you my worst injury without going into the story so here goes
At our old house, our steps to the basement were near the kitchen, and I was playing around them when I was..say...4? Now, of course, mom had warned me multiple times not to do this, but being the genius kid that I was, I did it anyways.
Next thing I know, I was tumbling down said steps. Now, these steps were plain wood steps, very old. The railing stopped before the second to last step, and at the bottom, was nothing but cold hard concrete waiting for me.
So of course, I go tumbling down, breaking my nose along the way and of course hurting almost everything else. Luckily, I did not go flying down into the concrete, instead, I stopped myself by straddling the last rail on the steps, and when I say straddling, I mean I got hit hard where the sun don't shine D:
Once I got up, I just stood there, holding everything that hurt, (head, nose, etc...)
So that was definately my worst injury ever, even if I don't necessarily remember it happening. Funny story though, after my dad took me to the ER, they gave me a sticker and told me to stick it where it hurt the most