In this instructable I will be teaching you the easy way to lose internet connection to a xbox 360 be using wi-fi connection on a Ds. Someone has confirmed that it works for ps3 but i dont have a ps3 so im taking his word. Try using the same steps as the xbox but on a ps3. Recently, someone has tested wii but i believe it may not work all the time.
Connect to wi-fi on your ds with a game that has wi-fi game modes on it and you should see on the xbox that the connection has been lost or interupted. It works on both the new call of duty games (4 and World at war) so it should work on other games that has xbox live on it. It should say the same for ps3 but i dont have one. Wii im not sure what it says either.