People for the Ethical Treatment of Animals used two Playboy playmates wearing fake lettuce bikinis to give out veggie hot dogs. "They claim to be interested in the hot dogs, but we know why they're really out here," said former playmate Kari Kennell-Whitman (pictured, at left). "They go, 'Oooh, is that real lettuce? Can we touch your lettuce?' And we go, 'No, thank you.'" This is a food fight. The vegetarians from PETA were on Capitol Hill because they have a beef with the American Meat Institute, which hosted its own event. "I occasionally eat veggie burgers just because they're...