ABX swan dive ...
I especially like the comments I've been getting in my email box from a small firm that follows the bonds closely. One sample:
"ABX BBB- 07-1 45 middle ........ also markets are such that one could drive a mack truck through them ...... trew them ....... in my best brooklynese!!"
For more details, you can check out this item from Realmoney.com or this story from Reuters.