I've got a design idea.
Just a black shirt, with a big 'dirty.org' written on the front, but with the font used on LBT and P4E (those white bars)
but that may be too easy.
link to an old discussion:
http://64.233.179.104/search?q=cache:up3_QBgH2voJ:dirty.org/forums/showthread.php%3Fp%3D174097+dirtyshirt+site:dirty. org&hl=de&gl=de&ct=clnk&cd=3