Gachimuchi grew on Japanese video site Nico Nico Douga in the late 2000s, where users remixed clips of muscular American wrestlers and adult film actors into absurd, homoerotic comedy edits. Figures like Billy Herrington became icons of the scene, and their grunts, slaps and screams were looped, pitch shifted and reused as audio memes. The drawn out Aaaaaaa yell fits that tradition perfectly, spreading to YouTube, Discord and soundboards as a shorthand scream for overreacting. It remains popular because the performance is so serious that it feels funny in almost any context.