This one requires a bit of backstory.
Jeremy Piven has
backed out of his role in the Broadway revival of Speed-the-Plow. He claims a high mercury count caused him to be fatigued, experience spacial & balance problems, and made it difficult to remember his lines. He blames his high mercury count on eating too much sushi and Chinese herbs.
Riiiiight...
I like what playwright David Mamet
said, "I talked to Jeremy on the phone, and he told me that he discovered that he had a very high level of mercury. So my understanding is that he is leaving show business to pursue a career as a thermometer."
This has inspired some clever folks to make
Fish! The Jeremy Piven Parody Song, a take-off on
Zip! from Pal Joey.