Can I have a show of hands, how many people find this funny?

The Mighty Boosh skits are not standalone - without viewing them in context of what The Mighty Boosh is about, and without understanding the cultural references, then you won't get it.

Sometimes comedy is more than just fart jokes.

Hoorah for the Boosh! Not everyone's cuppa, to be sure, but there is a place on the comedy spectrum for their surreal take on life.

They are genius, I saw this sketch live at The Secret Policeman's Ball, it cracked me, and everyone else up. I posted a similar link in the Pi Day thread.

I found it hilarious on the first viewing, and I still dunno what it's all about "dark penetrating threatre, eh? well then... *watches* WTF?!?! why you no like my pie?! LOL!" was the sequence of reactions.

any chance either of you can explain what this sketch is about? I tried to google but had no luck....

I don't think it's "about" anything. As you say There - you do get it. Btw, I think it's hilarious because it is stupid. But could only vote for one.