From what I can infer from this pic, this is why you don't let your enemies take control of your thoughts: it will eventually result in massive amounts of damage being dealt to your hindquarters once the mission is done. Yukari Takeba has just learned this lesson the hard way.
You've seriously never played a Persona game before? Well the two characters in the pic are from the third installment of the series, Persona 3. I already mentioned the name of the character being spanked, but the one who is doing the spanking is Mitsuru Kirijo, one of the main character's sempai in the game itself (That's Japanese for upperclassman and technically called senpai). Seriously, just look up Persona 3 on the Megami Tensei wiki or something because I'm not going to say anything more right now.