I still don't know what a
treen is.

Sorry Jacky, me dear, (whoops - that's from the Madeira thread) I had meant to put in a definition but the previous post went on so long that I kinda forgot.

So far as I'm concerned - and I show my age very obviously here - a "treen" is a green skinned person of roughly human shape but without human emotions (or any emotions, actually) who lives on the planet Venus in a society controlled by The Mekon - a little, wizened creature with a massive head, who floats around on the prototype of the Hovercraft. He is the Arch-Enemy of Dan Dare, spaceman.