I don't know what sketch this is referring to

"So, to be clear, in threatening to blow up any climate ambition, Joyce’s Nationals could shrink our markets for agricultural exports in less than two years. (Why don’t we just punch ourselves in the head like Monty Python’s one man wrestler Colin 'Bomber' Harris?)"

~ Gabrielle Chan

https://www.theguardian.com/commentisfree/2021/jun/21/barnaby-joyces-nationals-threatens-to-blow-up-any-climate-ambition-and-its-making-life-hard

But maybe I'll find it. Also, I got a song from Cats in my head now. 

"Bustopher Jones: The Cat About Town"| 'Cats' Musical Wiki | Fandom

https://catsmusical.fandom.com/wiki/Bustopher_Jones_(song)

OK, it was online.

"Monty Python Colin 'Bomber' Harris" - YouTube

https://m.youtube.com/watch?v=0-9qZ4Zs6Ys&feature=youtu.be