...i just realised

I only know the quote about "Do we have wormsign??" from Dune as a direct result of a game called Kingdom O' Magic (this game which is... ... not good? it was pretty terrible) https://en.wikipedia.org/wiki/Kingdom_O%27_Magic

...I mean I literally read the book Dune. I watched the original film too.

but nope, some kinda naffy parody adventure game is what got the quote stuck in my head