By Katie Wilson Shawn Mendes has stunned fans after he stripped down to a pair of super tight boxers in the snow. The Canadian singer, who isn’t shy about taking his clothes off, filmed himself running barefoot through the snow and sledging down a hill as everyone around him looked wrapped up in coats, gloves and hats. Sharing the video with his 74 million Instagram followers, he captioned the post: “You can take the boy outta Canada.” Fans were quick to comment underneath with one quipping back: “But you can’t take the Canada out of the boy” followed by laughing face emojis. Another joked: “T…