Are there any Germans here?.... where's Udo when you need him?.... I have heard that Germans are pretty open with the whole sex / nudity thing. What is it like within the language?.... I want to know what is deemed offensive in terms of language... Here in Australia general curse words that are pretty much accepted are like the "F-Bomb" haha and "shit". Most offensive I think is the "C-Bomb" and I'm not referring to 'crap'. I think it varies from person to person however. I tell you now, I don't mind the "C-Bomb" but say the word "slut" in my presence and I will give you an ear full....... Words that imply certain things about a person insult me and that being one of those words which applies only to women drives me insane.... It's disrespectful laguage at it's most offensive to me. 
As Freeze and a few others have mentioned it has alot to do with the people you are associating with in conversation, I would certainly not use profane language in front of my grandparents, at work or around young children. Yes let's talk about decency..... Hahaha...