LogFAQs > #970914590

Mistere_Man posted...

https://screenrant.com/three-seashells-demolition-man-function/

How they work was once revealed by Stallone in a 2006 interview, explaining that a writer told him '...you hold two seashells like chopsticks, pull gently and scrape whats left with the third.' It's hard to say if such a technique would actually work in reality, which is to say nothing of how the shells themselves would be cleaned after usage. On reflection, it's easy to see why it's not one of the world-building elements that received clarification as per the contactless high-five Demolition Man explained.

That's what Stallone said.

The actual explanation is the writer literally called his friend while he was taking a shit and asked about his bathroom and he said "uhh I've got a bag of seashells in here as decoration" and the rest was history.

https://comicbookmovie.com/other/demolition-man-screenwriter-reveals-three-seashells-origin-a112133#gs.mx76vf

There was never an explanation for how to use them.