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!
Let's make it clear which team has the 
pizazz to be worthy of Jump.
Dejemos claro que equipo es el con más estilo para ser merecedor de Jump.
Vamos deixar bem claro quem tem o 
entusiamo necessário para a Jump.