What's the worst you ever hurt yourself as a kid?

For me, I think it was when I was playing in the yard, and saw one of my mom's pots of dirt for her garden, and I thought "yeah this would be good to dump on my lap"

It was full of fire ants. Big, angry, north carolinian fire ants.

I was covered in red welts and all I remember is screaming at the top of my lungs while my mom sprayed me down with a hose