Roger sez, "My new tee features an x-ray image of an At-At walker. 'Since the Dark Side started using genetically modified walkers, they found many had to visit the Imperial Veterinary Clinic of Osteology suffering with acute pain in their hip joints. X-rays revealed their skeleton structure was just not strong enough to manoeuvre wearing those heavy boots. No amount of Cod Liver oil would ease their pain.'"
AT-AT Anatomy T-Shirt (Thanks, Roger!)