The noob button
Say your playing a game and theres a noob that's being a complete idiot, you press this button and enter the noob's username, and it launches a program that traces his computer and embeds a virus that causes:
Documentation of all porn sites the target has visited, and having said document sent to everybody the target knows.
Deletion of all games from his computer.
Switching his background to a montage of his worst failures in game and in real life.
Every 5 minutes a popup appears that says "Stop being a noob, and learn to play properly".
This can be done multiple times, but on the 5th noob button on the same person, the virus causes the noob's computer to explode.