Every time I am invited to attend a gathering of more than just one or two people, I wear this shirt.  It's a hilarious conversation-starter, because everyone, even people who already know the joke, want to see what you do when you ask about it.  And those people usually want to ask you about it in front of other people, who then want you to show it to other people and etc. etc. etc.  Be sure to remember a tank top or undershirt (unless you're super buff and are using it as an excuse to show that off, in which case people will probably be impressed at first but will soon catch on and just think you're arrogant), lest you get asked to bare your midriff unexpectedly.  Part of me wants to order all of these types of shirts and find a team of people to wear them to a party with me!