He's been crying in his room blaming Nintendo, Zelda, and God for the last 30 mins.
I lol'd hard... :)
Anyways, I fortunately have not had very bad save file woes. The only two games it happened with was Wario Land on GB and Super Metroid. The former did hurt a little because I was at end of the game and I had collected all the treasure up until that point. I was halfway through Super Metroid when a friend of mine wanted to show his brother how cool the game was with all save slots occupied. So he deleted my game (leaving his and our other friend's save intact). I walked into the room and asked him how he was on the Space Station when all save game slots were occupied. At that time, I knew he deleted something... and I knew it was mine. What a douche!