London school of Eco-GNOMICS!

Here, I bet you didn't know David Bowie recorded a song in 1967 called "The Laughing Gnome!"
I'll bet you didn't know he was the voice of the gnome as well!

Here's a half-speed version to prove it.

"Here, what’s that clicking noise?"
"That's Fred! He's a METROGNOME! Ha haaaa!!"