People have been proudly pointing that out since the song's release.
I guess most people don't understand irony that well, and only tend to think of verbal irony when they think of the word "ironic". Rain on your wedding day, or a fly in your Chardonnay, would both be examples of situational irony, which is when something pans out the opposite way that you expected it to. You plan an outdoor summer wedding, imagining a gorgeous bright sunny day; then the date arrives, all your guests are in town, and the weather is all dreary and wet.
The fact that the internet still gets jollies from pointing this out so many years later leads me to believe that Canada has a better school system than the US (and maybe Italy ;), and are better educated than us.