Luckily for you I'm not a small so here's me modelling the t-shirt. Some of you will instantly get it and will be reaching for your phones. If you don't get it, not to worry.
What I'm wearing is a QR code.
It's like a glorified bar-code and all the information that the creator wants is contained INSIDE that image. At first I thought scanners read the code and then had to match it up with some kind of online database to give you the information. I was wrong.
So the message that the users get when they scan the image is :
http://wikimusical.com/XA-musical/QR The world's first wikimusical! Want to help write the songs and choreography for a Hip-hop / Pop musical? Check out the link above and check out the progressIf you have a smart phone (iPhone / Andriod etc) You should be able to download from the relevant App store a free barcode scanner. You use the scanner program to read the image (or any other image like it) and voila!, you get a message.
It's something all the cool kids are into.
You won't be able to read my t-shirt because the QR isn't completely showing. If you want to test out the whole thing here it is: