Love is Like Pi, Funny Math Mug, Awesome for Pi Day, Great Mathematics Gift for Math Teachers, Students, Mathletes, Geeks and Nerds This is nerd love at its finest. Perfect for Pi day (March 14), this funny math mug is sure put a smile on everyone's face. Makes a great gift for math teachers, students, mathematics professors, mathletes, geeks and nerds ABOUT THE MUG Warm your soul with a nice cuppa out of this perfectly sized black ceramic mug. It’s BPA and lead-free, microwave and dishwasher-safe, and made of black durable ceramic in 11-ounce sizes. Black ceramic 11 oz (0.33 l) C-handle Lead and BPA-free