User blog comment:JoFanForever/Is 'dickhead' okay for my fanfiction?/@comment-1874924-20110617060329

It depends on what rating you want to give your story. For a PG rating, then no. For a PG-13, then it's probably OK, as long as you use it sparingly (say, not more than 2 or 3 times in the entire story). Anything more than very limited profanity requires an R rating.