when I was like 11yrs. old, my father has bought a new phone for himself. I used to play a lot of gta vice city those days on my PC. one day i got to use a card reader to exchange multimedia between PC and the phone.
so, i copied gta vice city in my phone. bcoz i knew that i can move around the players using the phone's d-pad. I was left broken when I saw the error msg. in the phone: "file not recognised"
:-/
After few days, my friend wanted to play gta-vc, so he asked for the game CD. but this guy didn't have a computer in his home and he won't listen to me when I try to tell him, "you can't just play a video game in your DVD-player with a TV remote??" So, I gave it to him.
Next day, he was angry at me, bcoz the game didn't worked, obviously it was me who hve messed something in it. :-/

What utterly stupid things you guys or your friends have done?