Many Americans are confused concerning the real definition of a “popped collar”. In short, a collar has been popped when the wearer flips it up, so that it no longer rests on one's shoulders. It frames the face, and hides much of the neck. Many “poppers” nonchalantly flip their collars up, allowing the adjunct flap of fabric to slouch as it pleases, to create a vibe of effortless hipness. Some fastidiously iron said accessory, opting for a slick, polished look. Some favor the Twilight Zone style, fluffing their coat collars in a mysterious manner. The extremely confident poppers layer shirts, and simultaneously pop multiple collars. Polo or button-down shirts are the most popular media for poppage. (Typical of the coastal prep school dude and wannabe ganstas.)
That silly frat boy had a popped collar, until I pummeled him AND his collar into the ground.