Nipplapolis Share definition Flag When someone's (usually an older lady, sometimes older men) nipples are very noticeably erect through their shirt. "Hey, look... Nipplapolis!" "Ewww! His nipples are sticking out for miles!" Nipplapolis by cheertwat October 3, 2009 0 0 Get merch Get the Nipplapolis mug. Buy Now — $32.95 See more merch