I love this shirt. In addition to the general joy of the concept and the happiness of wearing it, I've been pretty amused by the reactions to it as well.

There are of course the general "what's it mean" questions and "I don't get it" comments. So far, though, this is my favorite:

I went to the library to pick up a few books on hold. An overly cheerful librarian retrieved them for me (if it'd been more that a few feet, he may have skipped) and dramatically waved them through the scanner. Then he stopped. He stared at my t-shirt and finally said, "That's an interesting shirt. It's very.... [long pause] unique." He smiled, told me the due date on my books, and told me not to turn them in late.

By "unique" I assume he meant either
1) He did not understand it whatsoever but was pretty sure it was supposed to be cool OR
2) He simply did not approve of the idea.

I decided not to ask.