Interesting. I wonder if she could cure stroke victims that way. Scramble, let the brain re-sort itself out and repair the damaged regions. She could make serious cash that way, even charging minimum fees.
It's just a pair of monster girls who live together being goofy.
As far as I can tell, the one on the left (Erika) promised something to the one on the right (Akai), and is making her wait, so Akai is tormenting Erika by confusing her with a noogie, of sorts.
It sounds like Erika, the one on the left, used to be male before being turned into a Slime. Also, apparently Akai has multiple personalities. The "Sakura" personality apparently hinges upon that lolipop-like thing, and since she's not using it right now, the Akai personality is in charge instead.