I was just a little boy at that time.
When I was 6 years old I got my first bike. On the way to school I fall head first in a deep (dry) moat. Highly overgrown with blackberry bushes and stinging nettles, it was not possible to move any part of my body without new pain.
But the worst injury: Two chuckleheaded neighbour girls laughed out loudly and told my disater to my school mates and the teacher

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Bernd