Saw this shirt at a D4 show and could not find it anywhere on the net so I thought I would make my own.
For a more detailed DIY screen printing method check out this post: DIY Hat Screen Printing
you will need:
Screen printing ink.
Cardboard from paper pad.
Print out the image at the bottom of this post.
Pin it to the cardboard and cut out the letters with an razor.
Stretch the t-shirt over the corrugated cardboard and center the stencil over the middle and pin it all together.
Cut Masking tape out to fill the "O" and "A".
Brush the paint onto the stencil.
Let the paint dry.
Disassemble and Iron the paint as instructed on the paint container.