The National Post reports in its Wednesday, March 19, edition that Justin Trudeau posted on social media for the first time since he stepped down as prime minister, showing what he got up to on his first Monday after Mark Carney was officially sworn is as Canada's 24th prime minister Friday. An unbylined item in the Post reports that Mr. Trudeau took a selfie as he went shopping at Canadian Tire. His cart was filled with kitchen utensils and appliances as he posed in the cooking section of the store. In the caption, he wrote, "Gotta love a Monday morning at Canadian Tire." The retail giant even responded in the comments, saying, "Always good to see you, sir" with an emoji of the Canadian flag. In Trudeau's previous posts on Instagram and X from four days ago -- when Mr. Carney took over -- he thanked Canadians. On X, he posted a similar message the same day. It said: "Thank you, Canada -- for trusting in me, for challenging me, and for granting me the privilege to serve the best country and the best people on earth." Mr. Trudeau also changed his social media bios, which now read, "Father, former prime minister of Canada."