Well, there is only a few reasons that is there:
1. Geek Squad, and something like that is only something that we (geeks) would find funny, so it was just thrown in there as random. Frankly, I find it hilarious!
2. Someone impaled their computer with a kitana or like sword, and than brought it to BestBuy under some sort of deal where they said they could fix it, unknowing about the sword, and the person in question sued Best Buy so now they put it in there to cover their asses.
The first one is most likely, but the second one is a completely plausible scenario.