It's things like this, I never put immature things in my code comments or sample texts if it's going to be even remotely connected to a professional setting. In fact, I even do so when it's not. I just have to read back my own code comments from when I was 17, to see that shit isn't actually funny :) :)
(obvious exceptions will be made if I have a really good joke, though. sacrifices for art, etc)
Basically as a way to guarantee that a copyeditor would rewrite it before it went to users and it wouldn't have copy written by developers.
An early beta user got an email calling him a motherfucker. Fortunately, he was good humoured about it.