fleet·ing ex·ple·tive a non-scripted verbal profanity or obscenity expressed and broadcast during a live television broadcast or radio broadcast. The term appears primarily in discussions of United States broadcasting law. Yep, he did. If you watched the Coca-Cola 600 all the way through Sunday night, you were treated to a little fleeting expletive courtesy of Chad Knaus. As Jimmie Johnson’s engine [...]