Visit Our Brand For More Exciting Pi Day & Math Lover Academic Apparels. Ideal design for university or school going students, mathematics teachers or math lover. Inspire Pi - 3.14 Math Teacher Pi National Day Academic design to wear. Do you love Math and Pi Day? Ideal for a passionate Math Geek who loves the mathematical constant and wearing Funny Pun. Are you as sweet as pie? No not that pie. The other pie. The 3.14159 pi. Well this hilarious and witty design is ideal for you. Lightweight, Classic fit, Double-needle sleeve and bottom hem