A fashion very popular in Europe, that consists of a rich person wearing a shirt (usually very expensive brands) and popping its collar, which makes them look extremely trendy and attractive to hot European chicks. This is hated on by most americans.
European chick: “Holy sh*t!! Look at that fly guy rollin up in his BMW and his popped collar on his La Martina shirt for 500 Euro. He is soo hot and rocks the style.“
American: “Look at that fag, who thinks he’s cool cuz he’s from Europe and pops his collar.“