When intrigued onlookers question you about your fancy new shirt, featuring the Gunnerkrigg Court sky symbol, just tell them you boot camped at GC xx-xx (insert own dates as required). They will be impressed and require no further explanation.
Shirt Info: Screenprinted on soft, comfortable, and socially responsible American Apparel Standard 2001 and Classic Girl 2102 in OLIVE! See sizing information first, especially if you haven't ordered American Apparel before!