Better get your ShamWow and SlapChop soon. Billy Mays is mad as hell and he's out to end Vince Offer's career. A couple years ago, perpetual pitchman Billy Mays hawked infomercial classics like the Zorbeez and the QuickChop. He's since moved on to bigger and better products like Oxyclean and the Big City Slider Station, but technically still sells the older products. In 2007, upstart pitchman and gross-out comedian Vince "You'll love my nuts" Offer essentially ripped off Billy Mays' Zorbeez, using infomercials to sell what he called the ShamWow--peddling millions of the orange and purple towels. In late 2008, Vince moved on to a QuickChop knockoff called the SlapChop.

Al Dente: Billy Mays Hates Vince Offer