U-SHAPED RECOVERY, n . An opportunity for economists to incorrectly predict the timing and nature of the recession's end just as successfully as they incorrectly predicted its inception, depth and duration. Variants include V-shaped recovery, L-shaped recovery and :-( shaped recovery.Go read 'em all. Funny cos they're true.
Via Salmon (sharp as ever) you have to check out this post by Matthew Rose at WSJ blogs that gives definitions for modern financial terms á la Bierce. Here's an example: