When I was 15, I was really small but played in goal.
My tiny hands, coupled with table tennis bat grip gloves, meant I really struggled to catch the ball. The manager was forever telling me to punch it.
One match a high lofted far post cross came over and as I was following it in the air, I heard the manager shouting "Punch it, Billy, punch it!"
Confidence got the better of me and I thought "I've got this" The euphoria of catching it mid air was almost orgasmic.
However...
My back pedaling momentum caused me to take a few steps backwards as I landed, The path of these few steps coincided with the post. Which I hit, quite hard while the ball was still above my head in both hands. Now, this caused the ball to pop straight up in the air. I had no idea where it was until it struck me on the side of my forehead and I had to watch it trickle over the line as I collapsed forwards into my six-yard box.
I wonder how many Goalkeepers have scored an OG with a header?