You realize too that a lot of these comedians also make a second career for themselves writing children's books. John Lithgow and Michael Ian Black both have written children's books that were relatively well responded to.
And realize too, even some puppeteers out there, who are known for their children's work, have done more adult and "X-rated" things as well: heck, before Sid & Marty Krofft gave us H.R. PUFNSTUF, THE BUGALOOS, SIGMUND AND THE SEA MONSTERS, and other ensuing shows, they had a sold-out stage show that was essentially a marionette burlesque. That's right: marionettes of topless women. And these guys later went on to become the kings of Saturday Morning kiddy fair in the 70s. Shari Lewis even, when she wasn't doing Lamb Chop, or voicing cartoon characters, she too did a bit of stand-up and such for more mature audiences.
I'm sorry, but I'm siding with the others on this one... I mean, I'm all for censorship, I think we could use some stronger censorship, considering what's polluting television today, but you do have to draw the line somewhere, and this kind of argument is absolutely silly. It's people like this who cause more problems than they think they are... I got in trouble years ago for a Steve D'Monster video that feature curse short cuts as a running gag throughout the video: curse short cuts have been used in cartoons for DECADES, even in LOONEY TUNES, it usually gets laughs, but somehow I'm not allowed to use it with Steve because it's "too adult"?
And one other thing: while there are some comedians out there who ARE genuinely offensive and don't care about it (I'm looking at you Joan Rivers), there are others who aren't so much: Don Rickles has even said that the reason he started insulting people was a way for him to actually have more interaction with his audience, but he has stated before that his insults are never intended to actually out right offend people, and that they're done in good spirit.