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You're probably wondering, "What the heck is Yellow Pig Day?" Its origins date back to the 1960s when two math students at Princeton where given an assignment to analyze the properties of the number 17. Thinking about the number 17 for so long drove them a bit nuts, as you can imagine, so they came up with this idea for a mythical yellow pig.

Oh yeah, and this yellow pig happened to have seventeen toes, seventeen teeth, seventeen eyelashes, etc. Now mathematicians in colleges and universities everywhere celebrate Yellow Pig Day by eating Yellow Pig Cake and singing Yellow Pig Carols (seriously, we couldn't make this stuff up). Find your own way to celebrate Yellow Pig Day!