Do you have a personality problem?

"Do you have a personality problem?" originates from the YouTube channel "Physical Gallery"'s program "Fake Men." This show features both regular people and celebrities experiencing special forces training, with Captain Lee Geun, a former UDT/SEAL officer, serving as an instructor. The phrase came from a scene where Captain Lee Geun questioned a participant who spit out sand from his mouth during training, saying, "What's wrong with this guy? Do you have a personality problem?"

The unique tone and humorous context of Captain Lee Geun's remark left a strong impression on viewers, spreading rapidly across online communities and social media. The use of the word "personality" and the awkwardly translated phrasing intrigued netizens, leading to numerous parodies and meme adaptations. This meme is commonly used to humorously call out or tease someone's actions or words, and variations often replace "personality" with other words for added effect.

The phrase gained massive popularity online in 2020, even ranking first in "Netizens' Choice: Phrase of the Year 2020."

Additionally, alongside other quotes from Captain Lee Geun, it has been recreated in various parody content, becoming a significant part of internet culture. However, cases of children mimicking this expression to bully peers have raised discussions about the social impact of such content.