SHUT UR INTERNET PERMANENTLY:
This is a slightly more advanced one. It shuts down your internet permanately. I tried it on myself accidently, i knew what it did, and it still took me a couple of days to get my internet back. works best on XP, not tested on vista or 7.
EDIT: At the bottom put a rickroll site or something. BTW, that 3rd line, isnt what disables the internet permanately. It is somethinge else, that just provides a fast response to shut down any connections.