A jaded cynic's downcast sign-off

Ordinarily, I ended the last break of my air shifts on one radio station by saying, "Peace be with you."  One morning, however, when I wasn't in the best of moods, I departed from my usual routine and ad-libbed, "And remember, trust no one."  Looking back, it's a wonder I didn't continue, "Up next: Another long set of soothing music to take the edge off of the impending doom that awaits us all."