As my nerd holidays go, this is a biggie. I can (and did) skip Mario day (Mar10), and the next big one is Star Wars Day (May the Fourth be with you), for which I have a quilting themed shirt.
But here's my shirt for today. I am easily amused
The math is
i for imaginary number, I'd say that integer also works. The way our math works is you can't really have a square root of a negative number, but you can imagine it!
2 cubed is 8,
Σ is sum,
π is pi!.
For ease of reading it says (more or less) I ate some pie, and it was delicious!