Otako greets Galko when she enters the classroom, but Galko doesn’t open her mouth and responds by gesture.
Galko finally opens her mouth when Otako asks why she’s not talking.
She explains that she’s concerned about her double teeth because the main character in the movie was too.
You can check out the original comic here! http://info.nicovideo.jp/seiga/book_anime/#m1_gyaruko
Official Galko-chan Nico Nico Page and Episode List: http://ch.nicovideo.jp/channel/ch2617618
Episode 8 - "Is It True You Have Horrible Bed-head?" : watch/1457583615