John Mayer's disastrous Playboy interview in which he dropped the N-word and told naughty bedroom secrets about Jessica Simpson is too much for even Oprah Winfrey to handle. Oprah's couch -- which has been a platform for dozens of celebrity apologies and explanations -- isn't open to the guitarist just yet. Why? Because O is great pals with one of John's exes! Inside scoop on Oprah's snub, plus a special Matt Lauer and Al Roker surprise is coming ... after the jump!