Today, math nerds the world over celebrate π, or pi, the world’s famous mathematical constant. Pi is perhaps the one number capable of bridging the gap between mathletes and the rest of us.

Math teachers love it because no kid can resist trying to rattle off the first few digits of that irrational, never-ending number, always starting with “3.14 ...” Baking enthusiasts love it for the easy pun. And people like me love it because of mind-blowing things like this.

While students are no doubt celebrating today with memorization contests,my wish for the rest of you is to have a pun-loving baking enthusiast in your midst.

Here’s a refresher on pi’s storied history — dating back to somewhere around 1900 B.C. — set to the tune of “American Pie,” of course: