As Luvies will be able to confirm, these five "cake girls" can be creepy. Extremely at that.
- Dear God, Peek-A-Boo. A popular theory is that the girls are serial killers that target pizza delivery boys once a month, every full moon. The video shows how they "train" to flawlessly execute their plans, using weapons on each other without fear of getting hurt and, later, playfully chasing the delivery boy around the house to make him feel safe. Even later, when he runs away and Yeri misses him with her crossbow, it's implied it's only so he can leave the premises of the house and not make anyone suspect of them. Pizza boy reaches a phone, dials a number, but nobody answers. Then someone exits the car... and the video cuts to his shirt being exposed in a glass. Fade to Black. Video ends.
- The simple fact that there are shirts displayed in what seems to be a Trophy Room. On the payphone the guy stops at the end, there's a poster that says "delivery boys missing". There's more than twenty boys on the poster. Calulating the number of full moons, they've been murdering people for more than two years.
- A theory surrounding Ice Cream Cake has the girls being vampires, and the MV, which functions as an introduction to Yeri, would be about the original four members initiating her to their cult. The grade of seniority manifests through the pallor of each member's hair and eyes (for example, oldest member Irene has pale blonde hair and light blue eyes, while freshly transformed Yeri has dark blonde hair and brown eyes. Joy, who fittingly was the youngest before Yeri, has blue eyes but her hair is still in the process of shifting to a lighter shade, being strawberry blonde).
- After the release of It (2017), it can be easy to make parallels to Joy's makeup work with Pennywise himself during a few scenes in the MV given the rather pale skin and the strawberry blonde hair (sans the streaks of red on Pennywise's forehead).
- Bright, energetic summer song Umpah Umpah. The title references the breathing pattern that kids are supposed to learn when they first start swimming. Both during Yeri's rap and at the very end of the song, however, the lyrics don't complete the correct breathing form, which basically means the person they are addressing the song to ends up drowning.Yeri: ''Umpah-pah, huh? It’s a little weird (Ding!)Um, where are you?You keep missing the beat?Warning: you drink water again...''
- Then, if you look at the teasers for Psycho, you'll see that it's very much inspired by the character of Ophelia from Shakespeare's Hamlet, with the girls donning white gowns and veils and being near water surfaces. Now, take a guess at how Ophelia killed herself...
- The lyrics and the song in Russian Roulette doesn't sound or look too bad, providing when you don't look up the music video. In this case, the MV has the girls attempting to murder one another by putting them into a series of deadly tricks, just for the sake to get attention of their love interest. During the whole thing it becomes clear that the world in the MV apparently doesn't work the way it does in real life.
- In the Chill Kill music video, the girls play sisters that are being kept locked inside their house's basement by their abusive dad, but they try and make the most of each day. That is, until Wendy decides to sneak out and after a while, when the others go look for her, they find her standing over a pool of blood, her attempt at confronting him ending with her accidentally murdering him.
