Where there are people, there are rivers and lakes, and where there are houses, there are bad things (mistakes) on the Internet. After Hatsune Hatsune's "Throwing Onion Song" became popular for half a year, another new bud of "addictive virus" that hit countless otaku with fast-paced and brain-dead pictures and spread widely is this world-famous "Waist Twist Song". Caramelldansen, the prototype of waist twisting song, is an electronic dance music created by Caramell, a Swedish music group. Later, it was used as the soundtrack in MAD made by a German netizen to show the animation materials he collected in the past five years, among which several pictures [POPOTAN] in the title of animation pictures appeared in the second minute and seventeen seconds of MAD. Later, an otaku in Japan was inspired by this crazy story, and intercepted the picture of the characters' hands swinging and twisting their waists on their heads in the opening film "Bobotan", which was the original prototype of "Waist Twist Song". The deeper evolution comes from the change of another Japanese netizen. He made a 3D version of MAD by using the shape of the projectile in "Oriental Fengshen", and let the brain-dead storm sweep through the ACG world in Japan. After that, songs are often accelerated at the normal playback speed of 1.20%, which makes the singing more powerful. With the "waist twisting" action of various anime characters, countless versions of MAD are made, and almost all works can't escape "poison". Because the speed of "Waist Twist Song" is really amazing, it even recently released the album and single of "Japan Premium Edition" in the form of official CD, which is a terrible song that otaku have to listen to for further study.