The last two are punchlines to jokes. I spent a great deal of the convention hanging with my Canadian friends. retrobabble was adamant I should post the jokes, especially since she's soon to get her green card and the discussion about voting prompted the first joke.
Every time I see someone make their mark -- X -- for their signature, I will think of Canada and how much funnier it is to sign with a different capital letter.
As for the second joke ... everyone should bow their heads and remember the lost saint of travelers. I think he looked a lot better on the medals. Because it's hard to wear AAA stickers and not look tacky.