Radio talk-show host Rush Limbaugh is joking about his police detainment at the airport yesterday for carrying Viagra in his luggage. "I've been racking my brain. I'm trying to figure out how Bob Dole's luggage got on my airplane," Limbaugh clowned as he opened his national program today. "I told the doctor, I said, 'Look, I'm worried about the next election, not ... .' A misunderstanding. Now, things are what they are." Former Sen. Bob Dole of Kansas is well-known for his use and endorsement of Viagra, a male sexual-enhancement drug. The host then changed subjects to discuss his visit...