"Open wide" doesn't begin to describe one Which Wich customer's unforgettable experience with the chain's popular Wicked Wich sandwich (comprised of five kinds of meat and double cheese), reports Restaurant News. Chad Ettmueller, Cumming, Ga., attempted to bite into one, his jaw locked, his mouth stayed wide open for 14 hours, he was treated at three different hospitals, and never did get to eat his sandwich.