(I've searched the forums on revenge threads, none I saw pertain or contain info on messing up computers.)
There is a 19-year old child who lives in my house, and just recently he deleted my iTunes off of my computer. Doesn't sound like a big deal, right? It is. Doing that broke my last nerve persay, and now I am out for some good revenge. (Wanna hear something worse? Today I go into the bathroom and find that my shaver is covered in hair. I got mad. After my suspicion leads me to investigate, I find out it wasn't even him. He let one of his friends use MY SHAVER. No need to emphasize the frustration I have.)
Here is the deal. I want to do something to his account on the computer that will totally screw his account over, or at least screw something up or mess with it. I know there are many other physical ways to deal with this, like breaking his "DJ" speakers or equipment, or destroying something else of his, but since of course I live with this person in my fathers house and still being 15, have to deal with this imbucile of a being.
So, any ideas on how to screw up his account without actually backfiring on myself and having the same happen to my account because of my mistake?