As the pitchman (Vince) is promoting his product he pours half of a 2 liter bottle of soda on a carpet scrap. The camera clearly shows the soda pouring out from under the carpet onto the counter. The camera backs away from the carpet the show the pitchman again and it is plain to see that the carpet scrap has been replaced with another with just a small circle of soda in the middle of it. Clearly a scam, the "sham" is!