Its probably the owner with different accounts or one of his friends. He'll have to remove it before the end of the auction. As dumb as people are I highly doubt anyone is that stupid.
--OR--
Im just really jealous that someone is about to become a millionaire off of a stick. And here I always thought it took hard work and perseverance.
The best part of the auction is the questions people ask him and the answers that he comes up with. It seems that several people know who he is and realize that it is a joke.