[Dr. Sivana]

I guess on the side of arguing this could be a good thing, one could say that for the first time, perhaps in U.S. history, someone running for public office has used a term that genuinely describes much of the politics we see every day. I can’t argue with that.

No. Years ago ('88?) the Citizens Party (lefty) used the unabbreviated version in radio ads to get attention.

[Dr. Sivana]

Frm wikipedia:

During the 1980 U.S. presidential campaign, the Citizens Party candidate Barry Commoner ran a radio advertisement that began with an actor exclaiming: “Bullshit! Carter, Reagan and Anderson, it’s all bullshit!” NBC refused to run the advertisement because of its use of the expletive, but Commoner’s campaign successfully appealed to the Federal Communications Commission to allow the advertisement to run unedited.[5]

So it was 1980.