when i was a little kid i explored the super smash bros 64 menu and since i couldn't speak or read english yet i accidentally selected "delete save data"
oh god my brothers were so mad at me and i was mad at myself once i realized what unholy deed i had done.
and one time when i was playing mario and luigi superstar saga as a kid, my save data disappeared out of nowhere. and i had just beaten hermie III too godammit why is life so unfair