This expression apparently refers to an episode of Happy Days (near the end of its run) in which Fonzi on water skis jumps over a shark tank. Unfortunately, I haven't seen this episode, but supposedly it was so bad that this episode became the beginning of the end for Happy Days. It went downhill from Fonzi's shark jumping and never recovered.
<>What's interesting though, is that the phrase has now taken on a life of its own outside Happy Days
. I have particularly heard it used to describe John Kerry's picture in the NASA sperm suit
, which is actually pretty funny. There's also a Web page currently dedicated to TV sitcom shark jumping
in general. It will be interesting to see where else the phrase pops up. Or, maybe everyone has already heard this phrase and it is old news.>