"Stephen Colbert" made his triumphant return to television on Monday's Late Show. When Colbert tracked down Jon Stewart to discuss Donald Trump, the host found his former Colbert Report alter ego living with Stewart and prepping for the end of the world. But while Stewart couldn't be bothered leaving his urine-filled cabin, Colbert brought "Colbert" back to his Late Show studio, where we all got schooled on a new word: Trumpiness. "Truthiness was from the gut, but Trumpiness clearly comes from much further down the gastrointestinal tract," Colbert's persona said, adding that unlike truthiness, Trumpiness doesn't even need to feel true."That is why I believe Donald Trump is a leader for our times: an emotional megaphone for voters full of rage at a government that achieves nothing, an economic system that leaves them behind and politics that elects people unfit for the job," he says. "And if you don't share their feeling -- that you don't recognize your country anymore -- trust me: If Trump wins, you will."(Full disclosure: TVGuide.com is owned by CBS.)