The childish side of me typed in "penis" expecting no results. Boy was I wrong.
Even looking for the word "fuck" reveals few internal communications which use it. In one thread, some guy seems to have gotten a sub-optimal time slot for putting out Democratic-leaning news on CNN, since it's at 6AM rather than closer to near 8:20AM when, it turns out, Obama was going to deliver some statement. They asked him if he thought it was possible to move the thing forward a couple hours, and suggested that if he couldn't then they might have to withhold the news completely for a later time. And he replied with a bit of lip about how crummy that is: "They structured their whole show on that we’ll make news in the 6am hour. We told them a time. They took care of us. Now they’re all asleep. Are we really going to screw them over on our mistake???" and he follows it up with a couple more replies which are similarly irreverent but not outright bad, making a valid case (which the higher-ups seem to eventually agree with) that alienating someone who's doing you a favor is a really bad idea and they should just bite whatever bullet they're biting with the worse time-slot. They basically tell him, "You're right, we'll listen to you, but fuck off with the attitude." And that's the scope of the thing. Relatively minor.
In another one, someone admitting that they're writing for FoxNews.com invites comments from them about some hit piece he's thinking about writing on the subject of Hillary Clinton maybe protecting Bill and trying to silence his accusers during his sex scandals... an internal email discussing this "opportunity" (to, presumably, have whatever their words might be, twisted) one emails to the other people in his office, "Is there a Fuck You emoji?". After some laughs they decide not to respond at all; but the guy is persistent, so the person who handles the forward says, "The asshole from fox emailed us again. I did some research and there’s still no “fuck you” emoji, unfortunately."
It's pretty tame stuff so far in my browsing. Relatively professional.