by Mark Finkelstein June 27, 2006 If the mark of a person at ease with himself is the ability to have a chuckle at his own expense, then Rush Limbaugh is a supremely serene man. In the wake of the incident in which he was detained at the Palm Beach International Airport when it was discovered he had in his luggage a vial of Viagra with a prescription not in his name, you might have imagined that Rush would have begun today's show with an indignant denial of wrongdoing. He might have explained in tedious detail that in fact the...