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This meme began to be used around 2020. It gained widespread recognition when Ralo, a former KakaoTV PD, used the video when his games weren't going well or when cryptocurrency prices plummeted. Later, as Ralo and other KakaoTV PDs and viewers migrated to TwitchTV, it became even more popular, coinciding with Twitch's spamming culture.

"Jeongsin-nagalgeot-gatae" is a meme primarily used to intensely express the feeling of "losing one's mind" in situations of sudden confusion or embarrassment. The origin of this meme dates back to around 2008, from a video of a student being forced to stretch his legs in a taekwondo dojang. The student's agonizing cry in the video, "Aak michilgeot-gatae!! Jeongsin-nagalgeot-gatae!!!" (Oh, I'm going crazy!! I feel like I'm losing my mind!!!), became the meme.

This meme is primarily used actively within gaming communities, especially among League of Legends users. It spread significantly among Twitch viewers, where the main audience demographics show 20s (63%) followed by teens (19%), and approximately 87% of League of Legends gamers are known to be male. Therefore, it can be seen that young males, primarily in their late teens to early thirties, are the main users of this meme.

This meme is primarily used by repeating the phrase "Jeongsin-nagalgeot-gatae" dozens of times to express a frantic or maddening emotion. Especially in League of Legends, the phrase fits well in any situation and is frequently used among general users. In esports, it is sometimes used to attribute a frantic image to specific players like Nuguri, ShowMaker, and Ghost from Damwon Gaming. In posts related to dark storylines, such as MapleStory's 'Dimensional Library Episode 6: Knights of Sharenian,' this meme is often seen being spammed. Furthermore, various variations exist using similar pronunciations. For example, "jeongu-nagan-geo-gatae" (looks like the lightbulb is out), "jeonggeul-gaeng-ol-geo-gatae" (looks like a jungle gank is coming), "jeomsu-naol-geo-gatae" (looks like scores will come out), "jeongsin-nagan-ae-gatae" (looks like a crazy kid) exist, and among them, the most famous variation is "jeomsim-nagaseo-meogeul-geo-gatae" (looks like I'll go out for lunch).

Jung-shin nah-gal guht gah-tae