: Cult classic films often feature numbered rules. For example, the movie Fight Club is famous for its strict rules ("Rule #1: You do not talk about Fight Club"). It is possible you are looking for a parody or a specific scene from a thriller where characters are warned about elevators.
This specific sequence of phrases appears to be a fragmented or highly specific search term rather than an established guide or documented internet phenomenon.
To help break down what this phrase might be referencing, several internet culture and media possibilities are analyzed below: 🔍 Deconstructing the Terms
: This most commonly refers to a famous internet meme ("Rule 34") stating that if something exists, there is adult content of it.