Some of the jokes in this episode are pretty lame actually. The ideas of how to express the hand-drawn manga chapters into the anime are running out.
Do you see the episode pic above? They are getting bald. So, that’s the sign Gintama series is aging LOL.
Anyway this series might take another hiatus. The final episode of the season to be aired next week.
The ‘sauce’: http://myanimelist.net/forum/?topicid=415379