Because the Shamwow guy doesn't participate in shenanigans like this. He thinks he's above this. Instead he just bites hookers and looks like a melted tan candle. This seriously is one of the 5 most funny random things I've seen in '09. Enjoy.
PS-I'm still not buying either of these guys products but if I'm stuck in an elevator with one of them Billy Mays would help pass the time quicker (n/h).