Duolingual is more than just a beneficial tool for those interested in grasp a new language. It has also become popular with language aficionados. However, regrettably, it seems that even this beloved platform is not exempt from the infamous Rule 34 principle.
Many have found that Duolingo™ + 34th rule combo are out there. It may come as a surprise, but ostensibly, there are user-generated artwork based on characters of Duolingo which adhere to the infamous guideline that states "if it exists, there is porn of it."

Lily Duolingo +18 by RougeFlair on Newgrounds