Show off your nerdy side with this funny and unique t-shirt! The black t-shirt features a cartoon math sheet with the words 'YOU SHALL NOT PASS!' printed above it. The sheet displays incorrect pythagorean theorem equations. It's made of a soft, comfortable fabric, this t-shirt is perfect for wearing to school, the library, or anywhere you want to show off your sense of humor and intelligence. It would make a great gift for the math enthusiast in your life. Get yours today!