One time, I used my Action Replay and it had Mario Kart DS in it. While I was switching games and I lied it on the couch, my brother came in and sat right on it. I tried to see if it still worked but it did not.

Also, I wasn't using it online. (Hackers suck when it comes to online) >.>
I still haven't gotten Mario Kart DS again since then. But I just play my brothers when I want to. (Besides, he broke mine, so it's fair anyway).
