Who better to poop on the White House Correspondents Dinner than Triumph the Insult Comic Dog ? On Saturday, when it was still supposed to be a fun night at the Washington Hilton (and before a maniac tried to assassinate the President ) Robert Smigel ‘s vulgar pooch puppet sat like a good boy in the red carpet line. When it was his turn, Triumph lifted his leg and took aim at the evening’s red-hat-wearing Republican guests. Serving as a credentialed Daily Show correspondent for the evening, the Rottweiler (or Montenegrin Mountain Hound, it’s a bit unclear) called the White House Correspondents Association Dinner “the annual gathering of the press that celebrates — or in tonight’s case, fondly remembers — free speech.” “On this night, members of the press sit down for a lavish dinner served by some of their former colleagues,” Triumph/Smigel continued, dubbing the evening “a black-tie January 6.” “So many of the biggest names in D.C. are here, such as Redacted. And Redacted,” Triumph gushed.…