The term "Rule 34" originates from a internet meme that states, "If it exists, there is porn of it." This concept has been around since the early 2000s and has been used to describe the idea that any character, fictional or real, will eventually have explicit content created about them.
The term "rule34video.com" likely refers to a website or platform that hosts or aggregates video content related to this concept. Such platforms often feature user-generated or curated content that may push the boundaries of what is considered acceptable or mainstream.