The Vice President is going around saying things like he's not sure if he really swore at a Senator, but he felt better afterwards (huh?), and Yes, that's not the kind of language I ordinarily use.
Consider the following to be totally unsupported hearsay: Yesterday I received an email from a reader of this blog who said he used to be in and out of Cheney's office before he was the Veep (the email was specific, I'm being vague), and that Cheney regularly used language that was not just salty but downright radioactive.
Not that swearing matters much in my book, but lying does.
If said reader wishes to say more s/he knows how to do so, although I can understand why one view of professional obligations might counsel against it.