Mrs. Guiliani Calling

ABC News’ Sunlen Miller Reports: Senator Barack Obama got a little chatty when the cell phones of multiple audience members started going off at once during a town hall in Vinton, Iowa.

"Is that the Clinton campaign calling," the Senator joked. 

An audience member yelled in return, "It’s Edwards!"  To which Obama retorted, "It’s Giuliani’s wife calling. Well, nobody answer it!"

The crowd at the Benton Country Fairgrounds roared in laugher, and Obama chuckled at his own joke.