“What are those?” became a major internet catchphrase after a 2015 viral Vine video by Brandon Moore, where the line was used to roast someone's shoes. The clip spread far beyond Vine through reposts, remixes, and reaction compilations, then got another wave of attention when a similar joke appeared in Black Panther in 2018. It is still popular because the setup is simple and instantly readable: show footwear or an outfit, then drop the shout for an immediate punchline.