This episode is a sidestory!  Gintama has been involved in many (one-sided) crossovers.  This time, they're working with the Jump comedy manga Sket Dance!  An episodic anime that airs on Thursdays at 6 PM about a group of three odd jobbers with plenty of laughs and tears...  Sounds very similar to Gintama.  As Gintoki warns that the Sket Dan is coming after Gintama, the Sket Dan members appear and offer a challenge!
the Pizazz-Pizazz fruit can 
give the dullest people pizazz!
¡la Estilo-Estilo le puede dar a la gente más aburrida el mejor estilo!
o Fruto Feliz-Feliz consegue animar 
até as pessoas mais enfadonhas!