Oh my god, I loved that episode. The guests were acting so silly! And it totally looked like Hikki and Ayu were making fun of the girl from mihimaru GT (though I know they weren't). She screwed up what she was saying and then Ayu and Hikki leaned in together and Ayu was laughing so hard she started to clap.
Like she did in this episode:
Music Station is probably thinking, "We need to stop sitting them next to each other!"