Hikasa Youko and Satou Satomi, seiyuu of Akiyama Mio and Tainaka Ritsu from K-ON!, voice two of the main female characters in Summer season anime Seitokai Yakuindomo. These two characters are members of Student Council of a school which used to be a girls’ school and has become co-ed now. Their personalities are quite unique. To put it simply, their minds are extremely dirty and to top it off they are frank and say out aloud whatever is on their mind. As could be expected, some zealous guy took the audio from Seitokai Yakuindomo and combined it with video from K-ON, creating dirty talking Mio and Ritsu. Good job. Your efforts are appreciated, dear fellow.
I re-uploaded the videos on YouTube and added translation so that anyone can enjoy it.