Here's the tee or hoodie that's perfect for any lover of pi--or for that matter, pie. This clever play on words lets everyone know that for you, pi is easy. That's because you're a smarty-pants math or physics whiz. The rest of us find that pi is hard, but pie is very easy, and we really like getting as much pie as possible. Wear this easygoing tee and hoodie, whatever pi you prefer.