Calculus fans rejoice. Here’s a little joke just for you. This joke may be an oldie, but it’s still a goodie and with an image of a cool, cartoony cabin, it’s even better.


Impress your mathematically inclined friends and confuse the rest of the world all while staying stylish. What more could you ask for?


Reg. Price: $19.95
ON SALE   $15.95 (Save 20%)
Sale ends in 13 hours

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Printed with in Oregon, USA