by Mike Krumboltz President Obama 's historic health care summit, billed as a bipartisan working session, was marked by a series of heated exchanges . It was also studded by a slew of buzzwords. Mysterious phrases like " donut hole ," " undercover patients ," and " premium discrimination " have been bandied about by both sides. The terms may be obvious to lawmakers, but for the rest of us, a glossary might come in handy.