LOL not rage, is was not clipped into the case properly and when he opened it, the disk slid out and hit the floor and its got a tiny chip on it and it will no longer read.
Or yes, he probably kicked the xbox and flung the disc across the room in a strop.
I dont know, but Id chose the latter myself too if Im honest with you!
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Cheers for the link BatFink... I will give it a shot in a few minutes.