So I used the downgrade check homebrew (even though I never have downgraded) to check out my installed system titles, and I came across something called "NGWord bad word list CFA". I never had realized that the 3ds warns you about using swear words and in some cases flat-out blocks you from using them - probably because I'm normal and have no reason for using swears on my 3ds! But nonetheless, I tried swearing at some fellow street-passers and sure enough, blocked! But it's a pretty...
Here's how you can remove the swear-word blacklist
Here's how you can remove the swear-word blacklist