After his speech at the "Values Voter Summit," in Washington, D.C on Friday, I asked Rick Santorum whether he was "stressed," which is how Herman Caindescribed him on the "Tonight Show."

"I look stressed?! No, I feel great," Santorum told THE BLAZE. "Do I look stressed to you? What would I be stressed about?" he said.

An apparent staffer to Santorum jumped in, taking a swipe at Cain. "You need to take time off the campaign trail and go on a book tour." Cain is currently on tour promoting his new book.

"Yeah, maybe I do. Take a vacation," Santorum joked. "No, I'm passionate. And sometimes passion comes across as intensity."