I share a room with two brothers, so being seen without a shirt or even any clothes at all was never a big deal, since we’ve been naked in front of each other in our bedroom for years. In fact, I was so used to taking my clothes off around other guys that on the first day at the end of gym class in 7th grade, I was halfway through showering at the end of class before it occurred to me that I was standing there naked with a bunch of random dudes.