If you are in charge of getting t-shirts for your high school or college mathematics club, puuuuhhleeze consider this t-shirt. Just replace "Your School Here" with your school name. Boom. Done. Roasted. I mean, everyone enjoys a good tangent right? Whether it be verbal (Oh, sorry, I got off on a tangent there) or mathematical (like, you know a line touching an arc), everyone loves a tangent.