Country music fans who tuned in to last night’s CMA show got a little more than a musical feast — they also got the scoop! Presenters Brad Paisley and Carrie Underwood let slip that Underwood and her husband Mike Fisher are expecting a son! Whether the reveal was planned or a slip of the tongue (I’m voting planned!), the news is out. Baby news wasn’t the only reveal of the evening for Underwood, though. She also debuted the music video for her song “Must Be Something in the Water” after the awards show. The song is off her upcoming album, “Greatest Hits: Decade #1,” which will be available in December.