Arch enemies David Letterman and Jay Leno shared football and chips in an ad for CBS' Late Show that aired during the second quarter Sunday night. Letterman, who thought up the idea, reprised his 2007 Super Bowl ad with Oprah Winfrey for this year's game, with the addition of Leno sitting beside them. They filmed the spot in complete secrecy last Tuesday, and Leno even wore a fake moustache to disguise himself when he arrived in New York. In the spot, Colts fan Letterman complains, "This is the worst Super Bowl party ever," to which Leno replies, "He's just saying that because I'm here." Letterman then mimics his fallen talk show adversary and Leno rolls his eyes as Winfrey throws her arms up in the air. The two late night stars and daytime queen filmed the ad on Tuesday at Letterman's Ed Sullivan Theater in New York, according to Winfrey's Twitter, which confirmed the spot's authenticity.