For some reason sounds really stick to my mind. I watched Night at the Museum 2 and those little Einstein bobble heads said it over and over again to 9 decimals. I never really forgot after that. It's funny because when I recall it I hear it in the obnoxious Einstein voices. I don't really care about pi so I've only wanted to know 3.14 but whatever. It's just that it doesn't really matter if you use 3.14159265 or 3.14 because you'll usually round the answer to one or two decimals anyway.
3.14159265 = more work, so why even memorize it?
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Do I have HFA? Nope, I've never seen a psychiatrist in my life. I'm just here to talk to you crazies. ; - )