Well, I found one version of it. I suspect I initially saw it at Politco:
Text hoaxes plague Obama VP planCarrie Budoff Brown Politco via Yahoo News
CHESAPEAKE, Va. – By the time Barack Obama is ready to announce his vice presidential pick, will anyone believe him?
In recent days, as speculation and anticipation has mounted, so too have phony text messages declaring Obama’s supposed running mate – from Evan Bayh and Hillary Rodham Clinton to Olympic gold medalist Michael Phelps.
It’s a cruel twist in a prolonged game of guessing that has put political junkies and Democratic supporters on edge since the campaign announced last week that it would disclose Obama’s choice through text messaging, which is expected to happen by Saturday.
In the absence of real information, pranksters have filled the gap with guidance from the website Wonkette – and maybe Howard Stern, too.
“There is incredible enthusiasm for Barack Obama’s vice presidential announcement and unfortunately some people have used that enthusiasm and sent out hoaxes," said Obama spokeswoman Jen Psaki, who received one herself. “We can assure our supporters these texts did not come from the campaign and their data is secure. Everyone can also rest easy that despite their popularity, Mickey Mouse and Michael Phelps are not on the short list at this time.”
A Manhattan woman got excited when she received a message announcing Hillary Rodham Clinton, but soon realized it was a joke she saw nothing more about the choice on the Internet.
There also were reports of John Kerry, Walter Mondale and even Eliot Spitzer.
LINK TO FULL STORY