The Sket-dan get a new assistant homeroom teacher (who wants everyone to call her, Onee-san), but she's a klutz and is upset she can't be a good role model for the students, so the Sket-dan ask Chuu-san to help with some of his strange drugs. Later, Switch goes through some old inventions of his that didn't work out as intended...
I didn't know where to put them, 
so I stuck them all in that box.
No sabía dónde ponerlos, así 
que los apilé en esa caja.
No sabía dónde ponerlos, así 
que los apilé en esa caja.
Eu não sabia onde guardá-las,
 então deixei tudo nessa caixa.