Comedian George Carlin used to joke that there were seven words you can never say on television; he later expanded the list to 10. That was in 1972.
Check out the original joke. Personally I'm far more offended when they "bleep" or worse, "silence out" the vocals of songs with unacceptable words in it. Ever watched Eminem's "Stan" video clip? You hear about five words in ten. And they stuff they cut out like "gun" and "my girlfriend's in the trunk". Anything that may be violent or scary, even though you can still see it all. And another thing that gets me, what's with bluring out "the finger" during prime time. What the...?
I've heard every one of those words and more on Australian network TV. Granted it was at a late hour (after 9:30) but I have heard my fair share of dodgy words during primetime live shows. And hell, they all get on the radio damn near every day. The link above has a nice little brief history of naughtiness in the media which is entertaining. For example, Lorena Bobbitt cleared the way for "penis" to be said during prime time. President Clinton cleared the way for mentions of "oral sex". Now we just need a president to have an orgy and we're set. (via Plastic)