Helmet Heroes is a friendly game, where bad words are forbidden. However, there is an easy way to circumvent the censorship on some swear words, due to a typo trick, by switching two letters who look exactly the same: Uppercase "i" and lowercase "L". That way, by either speaking in caps lock or lowercase, we can circumvent the censorship relatively easily, in an unnoticeable way.
I was about to make a list of words, but I guess it would be a bit inappropriate for such boards.