Duolinger isn't only a beneficial tool for those wanting to grasp 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 principle.
Many have stumbled upon that Duolingual + Rule 34 fusion is out
there. It may come as a surprise, but apparently, there are actually user-generated artwork based on characters from Duolingo that follow the infamous rule stating that "if it exists, there is porn of it."