Don't kick yourself too hard Borachio, could happen to anyone.
One time during my highschool years I told my friend "watch this!", while we were hanging out in my room. I tried to do a handstand on my bed, but flipped over, and my butt slammed into the wall.
When I went to inspect the damage, there was a large butt-shaped hole in the wall. I quickly put a poster over it and my parents didn't find it until many years later, when I was an adult, so there wasn't any fallout.
Those things can come back to haunt.
When I was a little kid, maybe 12 or 13, the family had rented a house with a cellar that had 12' high ceilings. Maybe close to 4 meters. So there was storage boxes everywhere and I got the brilliant idea to set paper cups on them and walk through like high noon taking out the cups with my sling shot. It was great!
Until I missed and the pellet went into a box and I heard a glass 'tink'. Whoops. So I climbed up and opened the box to find a blender with a glass container and there in the glass was a neat little spidered hole.
Good shootin Tex.
So, since I had no desire to listen to my father go all Mr Germanic macho egomaniac on me I put it back in the box and spun the box around, cleaned up all the cups and moved along.
Over the decades I'd completely forgotten about it. I grew up, moved to Oregon, my parents split and I talked my mother into moving out west. In the packing process 30ish years later she put the box on the moving truck and the blender followed me like a wrathful beast out to get even. So she gets out west, gets settled in a new house, unpacks the box, sets the blender on her kitchen counter, blends something and whatever flys everywhere. So she gets to my house and gives me an earful, knowing which one of her sons would do such a thing, maybe because the pellet was still in the box. During the hell I started laughing which just made her more mad. Being 30 years older I just reached in my pocket and gave her a hundred bucks to go buy a better one. "But I liked t h a t one!"
Sometimes there is just no hope.