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
Hard to rank them. When I was about 9 yrs old and cut of my left index finger with a leather scissor. Or when I flew over the top of a bike, down a steep road, and the asphalt took of all the skin of my right hand, and I got a wound right beneath my nose that still, 35 yrs later, looks like a booger when it’s cold. Or maybe when I was climbing around big farm machines and jumped from one to the other, and I slipped, and punched a hole in my shin with a metal corner. The shin didn’t break, just got a hole, and it hurt like hell…
There’s plenty more. But my guess is my finger, since the doctor messed up the operation, and I had to have 3 surgeries - and it still didn’t work properly after that.