Duolingo™ is not just a beneficial resource for those wanting to master a new language. It has also become popular with language aficionados. However, sadly, it seems that even this popular platform also falls victim to the infamous Rule 34 dictate.
Numerous individuals found that Duolingo + Rule 34 fusion are out there. It could come as a surprise, but evidently, there are fan-made illustrations based on characters of Duolingo which abide by the infamous principle that states "if it exists, there is porn of it."