The scandal in which liberal-biased CBS newsanchor Dan Rather aired on his 60 Minutes program documents that supposedly showed that George W. Bush received favorable treatment during his service as a national guardsman. The documents were later shown to be false. As a result, Rather's career has gone down the toilet, and he is resigning and stepping down from CBS Nightly News, effective as of March 2005.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.