This actually came back to me in a nightmare last night.
When I was 8 I was told at school to unplug the school record player. I certainly did unplug something - the fish tank and next day all the fish were dead. I got told off in front of the whole school and was given lines :(
I still feel bad about the poor fishes to this day but it genuinely was an accident. Still feel quite aggrieved I got told off like that too.