The phrase in question refers to depictions of the Spider-Man character, or related characters and settings from the Spider-Man universe, within the realm of Rule 34 of the internet. Rule 34 posits that if something exists, pornography of it exists. As such, the term denotes the creation and consumption of pornographic comics featuring Spider-Man. These depictions can range widely in style, content, and artistic quality. For example, one might find illustrated narratives featuring Spider-Man in explicit situations, often diverging significantly from established character lore.
The existence of this category highlights the pervasive nature of internet culture and its application to established intellectual properties. It underscores the complex relationship between fandom, sexuality, and artistic expression. Historically, the internet has provided a platform for marginalized or unconventional content, leading to the proliferation of subcultures and niche interests. This particular example reflects the application of this phenomenon to a popular and recognizable superhero franchise.