Tonight's episode had the funniest lines because for once they weren't trying too hard to be funny.
The main joke in the episode was a pope's face I'm not sure which one appearing in the ring of

that surrounds the ship.
The funniest lines came from the above joke.
I've got this bit about the papal poop, I thought oh the Catholic church had already gone to
I see some familiar feces in the audience tonight.
Thank you you've been a

audience.
If only it was that funny in the preceding episodes the humour in the previous episodes had been very hit and miss more miss than hit and there were a good few bits where a tumbleweed should have rolled through the scene.