Manchester: Former US vice president Joe Biden drew criticism on Sunday after he called a woman a 'lying dog-faced pony soldier' at a campaign event in New Hampshire. In an exchange, a 21-year-old college student asked Biden to explain his poor performance in the Iowa caucus last week. "It's a good question," replied Biden. "Have you ever been to a caucus?" he asked the student, who nodded.

"No, you haven't," Biden said. "You're a lying, dog-faced pony soldier." Biden's press secretary Remi Yamamoto tweeted the comment was a joke: "It's from a John Wayne movie and he's made it plenty of times before."