Rule 34 is a prominent internet adage found in the "Rules of the Internet" list, which states that if anything exists, there is adult content featuring it.

This concept is commonly depicted in various fan art and fanfictions all around the web, in which fictional characters from TV shows, cartoons and more are portrayed engaging in "mature activities."

The phenomenon bears resemblance to Ruined Childhood memes, in which innocent and beloved childhood characters are depicted in unexpected and adult-themed scenarios, often as a humorous and subversive take on pop culture.

In our latest video, we take a look back at this classic piece of internet culture and how it's evolved over the many years since its introduction.