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
Bike riding in the 80s and jumping ramps, the slope was too high and sent the bike upward so I let go (bad plan) and supermanned myself across the pavement on my chest. I had vertical road rash stripes all down my front.